Compare Roborock S8 Pro Ultra Robot Vacuum and Mop vs Ecovacs Deebot X9 Pro Omni Robot Vacuum and Mop

P1 Roborock S8 Pro Ultra Robot Vacuum and Mop
P2 Ecovacs Deebot X9 Pro Omni Robot Vacuum and Mop

Comparison Takeaways

Roborock S8 Pro Ultra Robot Vacuum and Mop

Where It Has the Edge

  • Ease of use is 4.8 vs 4.0. Ease of use is a key strength: setup is commonly described as quick, daily upkeep is low thanks...
  • Bin and Bag is 4.4 vs 3.7. Bin and bag design is viewed favorably for hands-off use: the internal bin is supported by reliable auto-emptying...
  • Ongoing ownership costs (bags, filters, batteries) is 3.9 vs 3.2.
  • Docking and Auto-Empty Reliability (Robot) is 4.6 vs 3.9. Across reviews, the RockDock Ultra is consistently described as reliable and genuinely automating ownership: auto-emptying, mop washing, water...

Ecovacs Deebot X9 Pro Omni Robot Vacuum and Mop

Where It Has the Edge

  • Fresh Liquid Pickup Speed is 4.6 vs 2.8. Several sources emphasize that the roller design can handle small wet spills by separating dirty water rather than...
  • Streaking / Residue is 4.2 vs 2.9. Many reviews report low water left behind and good streak control, and some highlight adjustable moisture settings. However,...
  • Edge and Baseboard Cleaning (Hard Floors) is 4.4 vs 3.4. Edge cleaning is typically a strength thanks to extending brush/mop behavior, with several reviewers noting good wall-hugging and...
  • Accessories and Tools is 4.0 vs 3.2. Unboxings typically include the robot, dock, ramp, cord, and manuals, with a dust bag preinstalled. Multiple reviewers note...
Average score
Product 1: Roborock S8 Pro Ultra Robot...
3.9
Product 2: Ecovacs Deebot X9 Pro Omni...
4.3
Accessories and Tools
Product 1: Roborock S8 Pro Ultra Robot...
3.2

Included accessories are often viewed as light for the price (limited spares like filters/mops), though replacement parts are widely available from official and third-party sources.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.0

Unboxings typically include the robot, dock, ramp, cord, and manuals, with a dust bag preinstalled. Multiple reviewers note that extra consumables (spare bags or detergent) may not be included.

Aesthetic design and finish
Product 1: Roborock S8 Pro Ultra Robot...
4.3

Design and finish are usually described as sleek and premium, with the robot available in black/white and the dock seen as modern but physically large.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Design and finish are consistently praised, with multiple reviewers calling the robot and dock premium-looking (brushed/metal-like textures and a sleeker base). Even reviewers with performance complaints tend to like the aesthetics.

AI, Smart, App and Automation
Product 1: Roborock S8 Pro Ultra Robot...
4.3

Smart features are a major strength: routines, per-room customization, schedules, multi-map support, 3D mapping options, and voice assistant compatibility are frequently mentioned. A minority report friction with assistant setup or firmware quirks.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.5

The Ecovacs app is widely praised for organization and depth (routines, maps, barriers, dock controls), and multiple sources mention Matter and voice features (including Yiko). A few note that some settings are buried or that the robot can be overly chatty.

Airflow blowback
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.3

Multiple reviewers note reduced debris scattering compared with earlier models, sometimes crediting a slowed or redesigned side brush. Conversely, some negative experiences describe debris drops around thresholds or during return-to-dock events.

Area Rug Handling
Product 1: Roborock S8 Pro Ultra Robot...
3.3

Area rug handling is generally solid on common rugs, but tassel/fringe rugs and some cords can still trap or snag the robot, leading to notifications or manual rescue in certain homes.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.4

Carpet detection is described as competent, but thick rugs and thresholds are recurring pain points in negative reviews. The robot is also described as limited to standard threshold heights rather than newer advanced climbing systems.

Assembly and Setup
Product 1: Roborock S8 Pro Ultra Robot...
4.7

Assembly and setup are generally described as straightforward, with minimal physical assembly and simple app pairing, though some users spend time refining room splits and map edits to their liking.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.0

Setup is often described as straightforward, but several reviews mention initial firmware updates, mapping hiccups, or time spent editing room divisions. Planning a little extra time for first-run mapping improves the experience.

Bag-full indicator
Product 1: Roborock S8 Pro Ultra Robot...
2.0

Bag-full indication is a weak spot in reviewer expectations: some call out wanting clearer notifications or indicators for capacity-related events, especially given the premium price.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Battery and Charging
Product 1: Roborock S8 Pro Ultra Robot...
4.0

No summary yet.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.9

Battery impressions are mixed: official low-power runtimes are strong, but measured testing and higher-power settings can look below average for efficiency and coverage per charge. Recharge-and-resume helps, and some reviewers still find it sufficient for typical homes.

Bin and Bag
Product 1: Roborock S8 Pro Ultra Robot...
4.4

Bin and bag design is viewed favorably for hands-off use: the internal bin is supported by reliable auto-emptying into a larger dock bag, reducing manual emptying frequency. Some wish for better in-run fullness handling or clearer indicators.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.7

Several reviews note the robot’s internal bin is small for a flagship, increasing dependence on the dock. The dock’s disposable bag is described as large-capacity, but spare bags aren’t always included.

Carpet — High-Pile Pickup
Product 1: Roborock S8 Pro Ultra Robot...
4.3

High-pile carpet handling and pickup are frequently described as strong for a robot, but plush carpets can still pose issues due to the mop module design and lift limits when mopping modes are involved.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Carpet — Low-Pile Pickup
Product 1: Roborock S8 Pro Ultra Robot...
4.4

Low-pile carpet pickup is often reported as above-average to excellent in standardized testing and daily use, though not always class-leading in deep-clean style tests.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Carpet — Medium-Pile Pickup
Product 1: Roborock S8 Pro Ultra Robot...
4.1

Medium-pile carpet performance is generally good, but a few reviewers expected more deep-cleaning power versus prior flagships or competitors, especially in sand-embedded style testing.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Carpet performance is frequently rated near the top, with strong deep-clean results and above-average pickup on rugs. Some comparisons still argue the X8 is close enough on most tests that the X9’s premium is hard to justify.

Child lock
Product 1: Roborock S8 Pro Ultra Robot...
4.0

No summary yet.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Clogging and debris prevention
Product 1: Roborock S8 Pro Ultra Robot...
3.2

Clogging/debris prevention is usually solid, but a few reports mention rare events like clumps left behind or jams that required intervention, especially when encountering cords, socks, or concentrated debris.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.2

This is a key split point: multiple reviews report clogs with medium/large debris, pet hair, or messy mixtures, sometimes without timely alerts. Others report strong day-to-day debris handling with reduced scattering, suggesting performance depends on debris type and home layout.

Comparative performance
Product 1: Roborock S8 Pro Ultra Robot...
4.0

Comparative performance is generally strong versus many peers and earlier generations, especially for automation and navigation. However, multiple sources note it can be a step back in certain areas (cord avoidance, plush carpet compatibility, or missing monitoring features) depending on what you value.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

In roundup-style coverage it’s presented as a top performer and award winner, but some side-by-side comparisons conclude the less expensive X8 (or other flagships) can be a better overall buy. The X9’s strengths are usually framed as best-in-class mopping and very strong all-around cleaning.

Controls and UI
Product 1: Roborock S8 Pro Ultra Robot...
4.4

Controls and UI are broadly viewed as feature-rich and usable. The app supports fine-grained control (zones, rooms, power/scrub settings, dock behavior), though a few reviewers describe some menus or map edits as finicky.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.0

App controls are generally seen as excellent, but physical controls and map-editing workflows get criticism in some reviews (sluggish button response or tedious confirmation steps). After setup, day-to-day control is usually straightforward.

Crevice / Groove Pickup (Hard Floors)
Product 1: Roborock S8 Pro Ultra Robot...
3.2

Crevice/groove pickup is inconsistent across evaluations, with at least one test source calling it weaker than expected versus prior Roborock models, suggesting certain edge-case pickup scenarios may lag overall performance strengths.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Dirty water sensor
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Some reviews call out a dirty-water sensing feature in the dock that can adjust washing based on how dirty the pads are. It’s consistently described as a higher-end automation feature rather than a must-have.

Docking and Auto-Empty Reliability (Robot)
Product 1: Roborock S8 Pro Ultra Robot...
4.6

Across reviews, the RockDock Ultra is consistently described as reliable and genuinely automating ownership: auto-emptying, mop washing, water refilling, dirty water collection, and hot-air drying generally work as intended, with only occasional complaints about edge-case behavior or loud emptying.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.9

The OMNI dock is broadly viewed as full-featured and convenient, combining auto-empty, refill, and mop washing/drying. A minority of reports mention a one-off auto-empty clog/failure or debris dropping on the way back to the dock, so reliability is strong but not flawless.

Dock noise
Product 1: Roborock S8 Pro Ultra Robot...
3.3

Dock noise is a common downside: auto-emptying is repeatedly described as very loud for a short burst, while mop washing can add noticeable gurgling/operational sounds. Day-to-day dock function is valued despite the noise.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Dried-On Stain Removal
Product 1: Roborock S8 Pro Ultra Robot...
4.3

Dried-on stain removal is competitive among premium robot mop systems in comparative testing, with the S8 Pro Ultra placing near the top group in multi-run stain scoring. It is strong, but not always the outright best versus the newest top performers.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.9

Reviewers cite exceptional performance on dried-on messes, including lab-style scoring that places it near the top of recorded results. Real-home testers also report it can scrub sticky spots that older robot mops often leave behind, though not always perfectly.

Ease of use
Product 1: Roborock S8 Pro Ultra Robot...
4.8

Ease of use is a key strength: setup is commonly described as quick, daily upkeep is low thanks to the dock, and scheduling makes it close to ‘set-and-forget’ for many homes. A minority report app learning curve or occasional intervention for tangles/stuck events.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.0

When everything is dialed in, reviewers describe an almost set-and-forget experience with strong automation. Negative experiences typically stem from clogs, threshold issues, or mapping inaccuracies that demand more intervention.

Edge and Baseboard Cleaning (Hard Floors)
Product 1: Roborock S8 Pro Ultra Robot...
3.4

Edge and baseboard cleaning is generally good but not perfect; some real-home reports note crumbs near walls or under cabinet toe-kicks can be missed depending on clearances and layout.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.4

Edge cleaning is typically a strength thanks to extending brush/mop behavior, with several reviewers noting good wall-hugging and baseboard coverage. A common caveat is that the roller shape may miss a strip near certain appliances or toe-kicks.

Emptying and Mess Control
Product 1: Roborock S8 Pro Ultra Robot...
3.3

No summary yet.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Floor Drying Time
Product 1: Roborock S8 Pro Ultra Robot...
4.6

Floor drying time is generally reported as fast, with only a light amount of water left behind in typical mopping, and the dock’s drying system helps keep the mop pad dry between runs.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Lower water left behind and hot-air drying are commonly noted, which can help floors dry faster and reduce lingering dampness. Some owners still mention long deep-clean cycles that may include recharge breaks, but drying performance is generally praised.

Fresh Liquid Pickup Speed
Product 1: Roborock S8 Pro Ultra Robot...
2.8

Fresh liquid pickup speed is not a standout: multiple reviews note larger wet spills or sticky liquids can be spread rather than quickly lifted/contained, which is typical for many robot mop systems.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Several sources emphasize that the roller design can handle small wet spills by separating dirty water rather than dragging a damp pad across the floor. Demo-style testing (e.g., spilled milk) suggests it can clean quickly with minimal smearing compared with traditional pad mops.

Hair Pickup — Carpets
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Carpet hair pickup is widely reported as strong, including high pet-hair percentages in testing and positive real-home pet results. Performance can drop if debris clogs the airflow path or during tricky threshold transitions.

Hair‑Wrap / Tangle Resistance
Product 1: Roborock S8 Pro Ultra Robot...
3.7

Hair-wrap resistance is mixed but trends positive: dual rubber rollers help, and removable end caps make hair removal easier. Some tests still find tangling or only mid-pack detangling versus certain alternatives.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.4

Many sources highlight anti-tangle brush features (ZeroTangle/active hair removal) with lab tests showing near-zero tangling. At least one reviewer still experienced significant hair wrapping during problem runs, so it’s excellent but not guaranteed.

Hard Floor — Fine Dust Pickup
Product 1: Roborock S8 Pro Ultra Robot...
4.2

Fine dust pickup on hard floors is generally good for everyday use, but flour-like powders can smear or remain in some tests, suggesting performance varies with particle type and whether mopping is enabled.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Hard-floor dust pickup is consistently described as strong, with reviewers noting reliable capture of micro debris and fine dust. Some negative reviews still credit it for routine dust pickup even when larger-debris clogs occur.

Hard Floor — Large Debris Intake
Product 1: Roborock S8 Pro Ultra Robot...
4.2

Large debris pickup on hard floors is typically strong, with most reviews reporting solid crumb and debris collection. Some edge cases remain (near walls or under low cabinets) depending on layout and clearances.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Large-debris handling is generally good, but multiple reviews note edge cases where larger particles, thresholds, or entering/exiting the dock can lead to drops. Very large debris can also contribute to clogs on some floors.

Heating element
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Heated mop washing and heated-air drying are frequently highlighted, with some reviews noting adjustable wash/dry behavior. This is repeatedly framed as a premium feature that improves hygiene and reduces damp odors.

Innovation compared to competitors
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Reviewers frequently call out the roller self-washing concept and BLAST airflow path as meaningful advances over older hybrids. It’s still in a competitive field (other brands have strong threshold handling or alternative mop designs), but the X9’s implementation is often viewed as one of the more complete packages.

Low-profile design
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
3.9

Internal LiDAR is positioned as a design win for getting into tighter spaces compared with tower designs. Measured height is still around the high-3-inch range, so ultra-low furniture may remain out of reach.

Maintenance requirements
Product 1: Roborock S8 Pro Ultra Robot...
4.5

Maintenance requirements are lower than typical robot vac+mop combos due to automated dock tasks, but periodic work remains: water tanks, dust bags, wiping sensors, and occasional hair/brush cleaning.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.2

Routine upkeep is generally reduced thanks to dock automation and app reminders, but several reviewers still recommend periodic tank cleaning and occasional brush/roller clearing. Sticky, paste-like messes can create a bigger cleanup burden.

Map and Path Efficiency (Robot Vacuums)
Product 1: Roborock S8 Pro Ultra Robot...
4.3

Mapping and path efficiency are repeatedly highlighted as a top-tier trait: fast mapping, accurate tracking, and efficient coverage patterns are common praise points. Some long-term reports note maps can get messy after certain stuck events, but rollback/edits help.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.0

Some reviewers describe fast, efficient coverage and strong navigation once maps are set. Others report inaccurate initial mapping (especially in larger rooms) and more manual tweaking than expected for a flagship.

Mop lifting system
Product 1: Roborock S8 Pro Ultra Robot...
4.3

The mop lifting system is a key benefit for mixed floors: many reviews report it keeps carpets mostly dry and enables combined vacuum+mop runs. Limitations are noted for higher-pile rugs where lift height may still allow contact or dampening.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Multiple reviews mention automatic lifting behavior to protect carpets (mop lift, and in some descriptions additional component lifting). This generally helps with mixed-floor homes, though the robot is still limited on very tall thresholds or very thick rugs.

Mopping performance
Product 1: Roborock S8 Pro Ultra Robot...
4.1

Mopping performance is widely described as excellent for daily maintenance (dust, footprints, light smudges) with the vibrating system and frequent mop washing. Multiple sources caution that sticky/heavy spills can smear and may require manual cleanup.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

The self-washing roller mop is repeatedly called the standout feature, delivering strong scrubbing and excellent day-to-day hard-floor cleaning. A few tests found minor limitations (toe-kicks/appliances it can’t slide under, or slight stickiness/residue on messy stress tests), but it still ranks among the best.

Noise level
Product 1: Roborock S8 Pro Ultra Robot...
3.7

Cleaning noise is usually characterized as average-to-moderate depending on power mode, with higher suction on rugs/carpet increasing audibility. Several sources note it can disrupt conversation when nearby on higher settings.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.4

Operational noise is generally described positively (quiet or unobtrusive), and some coverage suggests BLAST aims to improve performance without a big noise penalty. Few reviews provide direct measurements, so perceptions dominate.

Obstacle Avoidance (Robot)
Product 1: Roborock S8 Pro Ultra Robot...
3.8

Obstacle avoidance is the most debated area. Many tests show strong performance for common clutter, but cords and certain small objects remain a recurring failure mode, and some long-term users report more snagging than prior camera-based models.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.2

Obstacle avoidance is generally rated above average, with good performance around common household items. Still, multiple reviewers report occasional real-world snags (chair legs, protrusions, or clutter), so it’s not consistently flawless.

Odor control
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.8

Hot-air drying and regular mop washing are repeatedly credited with preventing the damp, mildew-like smell that some robot mops develop. A few owners still clean the dirty-water tank regularly to avoid odors.

Ongoing ownership costs (bags, filters, batteries)
Product 1: Roborock S8 Pro Ultra Robot...
3.9

No summary yet.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.2

Ongoing costs can include disposable dust bags and detergent, and some reviews cite specific replacement pricing. This contributes to the sense that the X9’s total cost of ownership is premium, especially versus the X8.

Pet-Ready Features
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.7

Pet-focused commentary is largely positive: tests show strong pet-hair pickup and many highlight pet-oriented app features. The main pet-related downside raised is that heavy hair and larger debris can still contribute to clogs in certain homes.

Price and Value
Product 1: Roborock S8 Pro Ultra Robot...
3.3

Price and value are consistently framed as premium and expensive. Many feel the automation justifies the cost, while others believe quirks (cords, plush carpet limitations, or missing extras) make it harder to justify at full MSRP.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.5

Value is polarized: some reviewers say the performance and automation justify the splurge, while others recommend it only on sale or prefer the cheaper X8/competitors at full MSRP. The $200+ gap to close siblings is a recurring theme.

Privacy controls
Product 1: Roborock S8 Pro Ultra Robot...
4.1

Privacy tradeoffs are discussed favorably by some: reduced/changed camera approach and lack of remote home monitoring is seen as a privacy plus, while others consider the removed monitoring feature a downgrade.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Scratch resistance
Product 1: Roborock S8 Pro Ultra Robot...
2.5

Scratch resistance gets mixed attention: at least one test source raised concerns about potential floor scratching at high scrub settings, while others did not report damage. Cautious settings and monitoring on delicate floors are commonly advised.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Self-cleaning cycle
Product 1: Roborock S8 Pro Ultra Robot...
4.6

Self-cleaning behavior (mop washing and dock cleaning routines) is widely praised, with multiple sources highlighting that the mop is cleaned during/after runs and dries over time to reduce odors and upkeep.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Both the robot and dock emphasize self-cleaning: the roller refreshes during runs, and the dock can wash and dry the mop and clean its basin. Reviewers still report occasional manual cleanup after unusually sticky or heavy messes.

Software-update support / feature longevity
Product 1: Roborock S8 Pro Ultra Robot...
3.7

Feature longevity via updates is mentioned as important because some shortcomings (obstacle avoidance edge cases, map quirks) appear firmware-related. Several reviewers express hope or expectation that updates can improve behavior over time.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Solution / Liquid system
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
4.4

A detergent reservoir/auto-dispensing system and adjustable water output are noted across several reviews, enabling hands-off mopping. A few sources mention proprietary-solution recommendations or smaller solution tanks, which can increase refills or cost.

Storage footprint and upright-stand stability
Product 1: Roborock S8 Pro Ultra Robot...
3.4

Storage footprint is a frequent complaint: the dock is large and needs clearance to operate comfortably, which can be an eyesore or space issue in smaller homes.

Product 2: Ecovacs Deebot X9 Pro Omni...
No score yet
Streaking / Residue
Product 1: Roborock S8 Pro Ultra Robot...
2.9

Streaking/residue concerns appear mostly in heavier spill or smear scenarios (e.g., sticky foods). For normal mopping, most report clean-looking floors with minimal residue when settings are appropriate.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.2

Many reviews report low water left behind and good streak control, and some highlight adjustable moisture settings. However, a few stress tests (jelly or flour-and-water paste) left mild residue or streaks, indicating outcomes depend on mess type and settings.

Stuck resistance
Product 1: Roborock S8 Pro Ultra Robot...
No score yet
Product 2: Ecovacs Deebot X9 Pro Omni...
3.6

Reports vary from near trouble-free operation to frequent help alerts depending on home layout. Thresholds and odd obstacles can cause wedging or debris drops in some tests, while careful mapping/no-go zones improves reliability for others.

Suction and Airflow
Product 1: Roborock S8 Pro Ultra Robot...
4.3

Suction and overall vacuuming performance are usually rated strong, especially for daily debris on mixed surfaces. A few sources note deep-cleaning in specific tests or certain fine debris scenarios can be less impressive than expected for the price.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.6

Most reviews describe very strong pickup driven by Ecovacs’ BLAST airflow approach, with top-tier results on both hard floors and carpet. A few reviewers say the real-world improvement over the X8 is modest and that large debris can still trigger drops or clogs.

Under-Furniture Pickup
Product 1: Roborock S8 Pro Ultra Robot...
3.2

Under-furniture pickup is limited by clearance: several users report it performs well under many items, but cannot reach under very low cabinets or tight toe-kick spaces, leaving some debris behind.

Product 2: Ecovacs Deebot X9 Pro Omni...
3.7

The internal LiDAR approach avoids a tall turret and helps it reach under more furniture than tower-based bots. Still, reviewers note the roller mop can’t slide under some low-clearance areas the way flat pads can.

Water tank
Product 1: Roborock S8 Pro Ultra Robot...
4.4

Water tank capacity and the clean/dirty tank system are repeatedly described as generous and convenient, enabling multiple cleans before intervention. Users still need to refill/empty on a cadence based on home size and mop settings.

Product 2: Ecovacs Deebot X9 Pro Omni...
4.1

The clean/dirty tank setup is commonly described as easy to use, but there are tradeoffs: some miss transparent or externally visible tanks, some describe smaller/hidden tanks requiring more frequent refills, and dirty tanks can have corners that trap grime.