Compare Roomba Combo j9+ Robot Vacuum & Mop vs Roborock S8 Pro Ultra Robot Vacuum and Mop

Reviewers wanted more included extras: one noted only an extra dust bag, another said the box lacked spare mop or HEPA filter, and one mentioned proprietary solution separately.

The liftable brush and mop mechanisms were viewed positively because they move out of the way for mopping, carpet avoidance, and surface changes.

Design opinions were mostly positive for the robot and base blending into rooms, though one review disliked the cheap-looking faux wood.

Design reactions were mostly positive for a sleek look, though dock styling was considered less living-room-friendly by one reviewer.

Smart features were a strength, including mapping, app automation, Dirt Detective-style prioritizing, and efficient cleaning paths.

The app, maps, schedules, routines, assistants, and customization were consistently praised, with minor learning-curve or finicky-map caveats.

Airflow or brush blowback was a weakness where the side brush flicked larger bits around.

Area-rug handling was mostly praised for dry-carpet transitions, but one review reported the mop pad trapping under a rug.

Rug handling was mixed: mop lifting kept many rugs dry, but plush carpets, loose tassels, and high-pile edge cases remained concerns.

Setup was usually quick or simple, with several reviews praising app guidance, though one reviewer needed early tech support.

Setup was broadly described as simple, easy, painless, or remarkably straightforward across hands-on reviews.

Automatic stopping around obstructions was praised when the robot halted for kids or cats in its path.

One reviewer found the bin-full alert useful as part of the low-touch cleaning routine.

Battery and charging evidence was mixed: some reviewers saw solid runtime, while others complained about long charging or failure to resume.

Battery life was generally adequate to good, with recharge-and-resume helping, but carpet boost and large runs could require recharging.

The bag system earned positive comments for an easy click-in design.

The bag system worked well with official bags, but a reviewer warned that poor-fitting third-party bags could disrupt auto-emptying.

Build quality evidence was negative in the malfunction report, where one test unit failed.

The water tanks were described as solid and durable in one review.

High-pile carpet pickup was weak in the review evidence, with the robot struggling in longer fibers.

High-pile carpet pickup was above average in one test, but plush carpeting raised concerns because the fixed mop mount may still contact rugs.

Low-pile carpet pickup was generally good, though one reviewer still needed a manual vacuum for stray hair.

Low-pile and general carpet pickup were usually strong, though one comparative test still found small debris left behind.

Medium-pile carpet evidence was mixed: one review found weak performance on longer carpet, while another reported a top deep-clean score.

Medium-pile deep cleaning was mixed: one review called it above average but unimpressive, while another found the S8 Pro near the top in a flour test.

Debris prevention had a limitation in one review, where large pieces could get stuck between the rubber brushes.

Clog and debris prevention was a weakness in several reviews, especially with cables, cords, and dust clumps around the rollers.

Comparative performance was split: one review rated vacuuming among the best, while another said competitors maintain floors better.

Comparisons were split: some reviews rated it better than older or newer models in areas like mopping or navigation, while others preferred alternatives for value or obstacle avoidance.

The app and controls were usually described as easy and feature-rich, but one reviewer missed live map progress and another noted app quirks.

Controls and UI were a strength overall, with praise for customization and scheduling, though map editing and some settings took effort to learn.

Corner cleaning was mixed-to-weak: one reviewer praised corners, but several noted poor corner reach or missed nooks.

Corner performance was mixed: one reviewer praised side-brush edge and corner cleaning, while another found crumbs left near the wall.

Crevice pickup was praised as better than earlier i-Series and j-Series Roombas.

Crevice pickup was weak in Vacuum Wars testing, while one review only found suction generally effective rather than exceptional in grooves.

Docking and auto-empty reliability was mixed: some saw reliable return and resume behavior, while one reviewer had a failure to finish after recharging.

Dock reliability was mostly strong, especially auto-empty and self-cleaning, though one comparison criticized the S8 Pro dock design and one owner had an emptying failure.

Dock noise was highly mixed, from jet-like complaints to one reviewer calling it the quietest self-emptying process tested.

Dock noise was a repeated concern; reviewers often found auto-emptying loud or startling even when normal cleaning noise was acceptable.

Dried-on stain results were generally strong, especially in mopping torture tests and muddy paw-print tests, though one review said deep cleaning still needed manual work.

Dried-on stain results ranged from excellent in Vacuum Wars mopping tests to poor in heavy yogurt/honey-style mess tests.

Ease of use was a core strength, with multiple reviewers emphasizing hands-off operation, simple setup, and low effort.

Ease of use was a major strength, driven by automated maintenance, app control, and low-effort daily cleaning.

Edge and baseboard cleaning was a weakness in one review, especially for hair and grime along edges.

Baseboard and edge cleaning was mixed, with strong side-brush comments from one review and missed wall-side crumbs from another.

Edge-following accuracy was positive in one review where the robot cleaned along edges instead of bumping into them.

Edge-following accuracy was mostly good, with reviewers noting wall-hugging and precise lines, even when other navigation issues appeared.

Emptying and mess control was a major strength, with hands-off bin emptying and detangling repeatedly praised.

Auto-empty mess control was usually excellent, but one reviewer experienced dust trailing after an incomplete emptying event.

The filter or component health indicator was praised as handy for keeping the Roomba in good condition.

Maintenance indicators were useful, with app tracking for parts, replacement timing, and estimated wear.

Dust containment was mixed: one review found the internal bin nearly empty after auto-emptying, while another saw dust and litter left behind.

Floor drying evidence was limited to one reviewer noting a damp stripe left behind.

Floors generally dried quickly after mopping, and the hot-air dryer left the mop pad dry between cleanings.

The floorhead design received a positive assessment as a proven Roomba brush design.

The dual-roller floorhead was considered anti-climactic by Vacuum Wars because it did not translate into standout carpet deep-cleaning.

Floor shine evidence was strong in one review where freshly mopped floors visibly glowed.

Some reviewers described shiny or sparkling floors after cleaning, especially when mopping worked well.

Fresh wet mess handling was mixed, from strong wet-stain performance to minor spreading and poor large-spill handling.

Fresh spill pickup was poor in TechRadar testing because larger wet messes were spread rather than removed cleanly.

Hair-channel issues appeared in one review where long human and pet hair tangled in the brushes.

Hair removal from the brush area was easier than usual because removable brush ends let tangled hair slide off.

Carpet hair pickup was a weakness in one review that found low-pile carpet still needed a Dyson pass.

Carpet hair pickup was good overall, including pet fur, though not always the best in class.

Hard-floor hair pickup was strong in reviews that praised pet hair and daily debris removal.

Hard-floor hair and dirt pickup was strong in owner-style reviews, especially for cat fur, dust, and uneven floors.

Tangle resistance was praised by two reviewers, including one who reported no tangles or hairballs.

Hair-tangle performance was mostly positive thanks to rubber dual rollers, though some tests still found tangles or middling rankings.

Hard-floor fine dust pickup was mostly strong, but one quantified sand result on hardwood was weaker.

Hard-floor fine-dust pickup was strong in lab-style tests, but one home test found flour smearing under certain settings.

Hard-floor large debris intake was mixed, with strong extra-large debris pickup in one review and rice scattering in another.

Large debris pickup on hard floors was generally good for oats, cereal, and rice, though not perfect in every test.

The hot-air drying element was valued for helping prevent smells, bacteria buildup, and damp mop issues.

Innovation was praised for the retractable mop and feature set, though one review framed the j9+ as less unique against high-end rivals.

Reviewers often framed the S8 Pro Ultra as highly advanced or innovative, though long-term and comparative reviews noted some regressions.

Kid-friendliness was positive in one review where the robot stopped calmly when children stepped in front of it.

Large debris handling was praised in one review that called it among the best for fine and oversized debris.

Large debris and tough mess handling was mixed: cereal and rice were easy, but concentrated spills or tough spots required manual help.

The low profile was praised because it helped the robot fit under furniture.

Its height still allowed cleaning under most furniture in one review.

Maintenance was mixed: some reviewers found care simple, while several disliked washing mop pads and checking parts manually.

Maintenance was a standout strength because the dock handles frequent tasks, though reviewers still noted occasional part cleaning and consumables.

Maneuverability was strong in tight spaces and on hard-floor rugs according to two reviewers.

Maneuverability was mostly strong across floor types and tricky spaces, but one review reported getting stuck in odd places.

Mapping and path efficiency varied widely, ranging from accurate and logical mapping to slow, incomplete, or clumsy early map learning.

Mapping and path efficiency were usually excellent, fast, and accurate, but one reviewer had room-division and map-editing problems.

The mop-lifting system was a standout strength because reviewers said it kept carpets dry better than ordinary lift pads.

The mop-lifting system was widely praised for keeping many carpets dry and enabling combined vacuum-mop runs, with plush rugs as the caveat.

Mopping performance was broadly useful for routine upkeep and stains, but weaker on sticky messes and against some spinning-mop competitors.

Mopping was generally strong for daily cleaning and light stains, but results dropped with heavy spills, tougher stains, or one-pass comparison tests.

Noise was mixed: one reviewer found the vacuum and dock very loud, while another described the robot as quietly working in the background.

Cleaning noise was acceptable to good in some modes, but higher suction and dock emptying could be intrusive.

Obstacle avoidance was one of the strongest areas, with many reviewers praising avoidance of toys, cords, pet waste, and household objects.

Obstacle avoidance drew the most mixed evidence: some tests were excellent, while others showed cords, mugs, remotes, or tight spots causing issues.

Odor control was viewed favorably because the no-dirty-water-bin approach was considered more sanitary and less messy.

Odor control was a strength when the mop dryer worked, but dirty water still needed timely emptying and rinsing.

Onboard storage was praised for a convenient compartment for spare supplies.

Ownership cost evidence was negative because reviewers noted replacement parts and consumables add ongoing costs.

Ongoing costs were softened by generic consumables in one review, though bags, filters, and mop cloths remain required.

Reviewers repeatedly praised day-to-day convenience, saying it reduced manual vacuuming and made cleaning feel easier.

Overall convenience was the core strength, with reviewers repeatedly describing near-hands-off cleaning and reduced floor-care effort.

Durability evidence was limited but mildly positive, with one reviewer saying it held up reasonably well during intense testing.

One six-month reviewer reported daily use with impressive low-touch dustbin maintenance.

Overall opinions leaned positive, with many reviewers calling it impressive or excellent, though a few saw it as better at vacuuming than mopping.

Overall opinion was positive but not unanimous: most reviewers praised it as advanced and capable, while some criticized price, obstacle avoidance, or design quirks.

Packaging earned praise for smart design and visible quick-start instructions.

Packaging was described as neat and protective in one unboxing review.

Pet-focused evidence was strong: reviewers highlighted poop avoidance and confidence that pet messes would not be spread.

Pet-readiness was supported by good pet-hair pickup, pet-mode features, and reviewers with dogs or cats finding daily shedding manageable.

Value opinions were divided: some reviewers felt the performance justified the price, while others called it expensive or hard to justify.

Price sentiment was mixed-to-negative: reviewers called it expensive, sometimes worth it, but not always the best value against alternatives.

Privacy controls were mixed-to-positive: one reviewer called data sharing a convenience tradeoff, while another cited opt-in limits and no map-data sales.

Privacy was a tradeoff: losing the RGB camera and microphone eased concerns for some but removed remote monitoring.

Runtime was generally positive, with tests around 113 to 115 minutes and one reviewer seeing two and a half hours.

Runtime was generally good and often around 130 minutes, though max suction, carpet boost, and large homes reduce it.

Scratch or scuff resistance was a concern in one review that noted light scuffing on the robot's casing.

Scratch resistance was a notable concern in PCMag testing after laminate scratches persisted even with a replacement mop pad.

The self-cleaning cycle was a repeated weakness because the dock does not wash the mop pad automatically.

The self-cleaning cycle was one of the strongest themes, with repeated praise for washing, drying, refilling, and auto-emptying.

Software support was mixed: one issue seemed firmware-fixable and one pathing bug improved, but map transfer limitations remained.

The liquid system was praised for a large reservoir stored neatly in the redesigned base.

The liquid system was useful and efficient, but reviewers noted proprietary-solution guidance, water-only use, and non-removable tank quirks.

Stair usability was poor because reviewers noted the robot cannot climb stairs and must be carried.

One review praised the compact footprint, saying the vacuum and base used about a square foot and were easy to place.

The dock footprint was a drawback; reviewers repeatedly called it bigger, bulky, massive, or hard to place in small spaces.

Streaking and residue were mild concerns, with reviewers noticing occasional streaks or sticky residue after tests.

Residue and streaking evidence was mixed: floor-direction mopping was promising, but some heavy messes smeared.

Stuck resistance was generally good, with reviewers reporting only rare stuck incidents after setup or during longer use.

Stuck resistance was highly split, ranging from never-stuck results to repeated cord, rug, and tight-space failures.

Reviewers consistently praised suction, saying it outperformed the j7+, made a real-world difference, and was powerful enough to clear typical debris.

Suction was generally powerful in real use, but Vacuum Wars measured lower suction and airflow than expected.

Heavy-duty suitability was limited because reviewers warned against worse messes and said it could not handle large spills.

Heavy-duty suitability was limited; reviewers found it good for daily needs but weak on larger, concentrated messes.

Small-space suitability was praised in one review that called it a game-changer for small apartments and pet owners.

Small-space suitability was poor mainly because the docking station is large and can be an eyesore.

Reliability was mixed, with connectivity issues and one malfunctioning unit prompting caution.

Reliability evidence was mixed: one reviewer found it efficient and reliable, while another felt it fell short of expectations.

Surface safety had a caution around damp stripes and possible long-term wood-floor warping.

Surface safety was a concern because one reviewer saw laminate scratches and advised caution with scrub intensity.

One reviewer found bag swapping very simple, saying the custom waste bags took only seconds to change.

Tool changes were mixed: brushroll hair cleanup was easy, but changing the non-detachable mop cloth was more awkward.

Under-furniture pickup was positive where the robot cleaned under a sofa valance.

Under-furniture pickup was mixed because the robot fit under most furniture but missed crumbs under low cabinets.

Value-for-money was cautiously positive for parents in one review, despite the high price.

Value-for-money was split; high automation impressed some reviewers, but comparative and price-focused reviews questioned the premium.

Versatility was praised because the robot can vacuum and mop in one run with little extra effort.

Versatility was strong, with reviewers praising vacuuming, mopping, combined cleaning, room modes, and multi-surface use.

The water tank system drew praise for automatic refilling and automation, but one reviewer found the reservoir awkward to refill.

The water tanks were mostly praised for capacity and ease, though the robot’s onboard tank and mop were criticized as non-removable.

Weight was a setup drawback because the full box was described as something users should be ready to lift.

Weight was a practical drawback at delivery and setup because the box was described as massive and extremely heavy.