Average score
P1
Product 1: Shark PowerDetect Upright Vacuum
4.1
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.9
Accessories and Tools
P1
Product 1: Shark PowerDetect Upright Vacuum
4.4
Reviewers liked the practical attachment set, especially dual-purpose tools and pet-focused accessories, though hose reach shaped how useful they felt.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.2
Reviewers generally liked the hose and attachment set for stairs, upholstery, and spot cleaning, though one preferred a simpler pet tool over the Pet Pro attachment.
Aesthetic design and finish
P1
Product 1: Shark PowerDetect Upright Vacuum
4.3
Design impressions were positive overall: reviewers noted a cleaner finish, smart packaging of features, and a distinctive purple colorway.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetAI, Smart, App and Automation
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
The smart Detect system was one of the strongest themes, with reviewers praising automatic floor, dirt, edge, and direction adjustments.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetAirflow blowback
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.5
Airflow blowback evidence was limited and negative, with the comparison test criticizing the airflow strength of expensive models including the ProHeat.
Area Rug Handling
P1
Product 1: Shark PowerDetect Upright Vacuum
3.5
Area-rug results were mixed: transitions were smooth on low-profile rugs, but thin rugs and large clusters sometimes required extra effort.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.3
Area-rug handling was mixed: one reviewer saw an old rug revive well, while another warned powerful brushing could pull rug fibers.
Assembly and Setup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Setup was described as quick and easy, with straightforward assembly from the boxed components.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.5
Setup ranged from simple and quick to frustrating for beginners, with some reviewers praising the guide and others needing clearer instructions or noting slow assembly.
Bin and Bag
P1
Product 1: Shark PowerDetect Upright Vacuum
4.3
The dustbin drew praise for its larger capacity versus many cordless vacuums and for reducing emptying frequency.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetBuild quality and durability
P1
Product 1: Shark PowerDetect Upright Vacuum
4.5
Build was described as robust and heavy-duty, with durable-feeling materials despite the mostly plastic construction.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.3
Build quality comments were positive, describing the machine as sturdy, durable, and worth the investment despite its bulk.
Carpet — High-Pile Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
2.8
High-pile performance was the clearest carpet weakness: one lab found the brushroll lacked enough agitation for long, thick fibers.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.5
High-pile or thick-carpet evidence was limited but positive, with one reviewer saying the floorhead and suction could deep-clean very thick carpets.
Carpet — Low-Pile Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.9
Low-pile carpet pickup was consistently strong, from rare perfect-score language to impressive mixed-material cleanup.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetCarpet — Medium-Pile Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Medium-pile and general carpet/rug results were strong, with reviewers calling it one of the best for carpet and better tuned than Stratos in one comparison.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetClogging and debris prevention
P1
Product 1: Shark PowerDetect Upright Vacuum
3.0
Clogging and debris-prevention evidence was mixed because one lab found material clumped in the hose despite strong pickup.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.0
Debris handling was criticized in one review where dirty fibers or clumps could be left behind and create extra cleanup.
Comparative performance
P1
Product 1: Shark PowerDetect Upright Vacuum
4.5
Compared with other uprights, reviewers often ranked the PowerDetect at or near the top, while noting Stratos remained competitive in some measures.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.8
Comparative performance was mixed: some ranked it near rentals or good enough to keep, while others preferred HydroSteam, Hoover, or cheaper variants for specific tradeoffs.
Controls and UI
P1
Product 1: Shark PowerDetect Upright Vacuum
4.6
Controls were considered clear and modern, with handle buttons and a colorful display supporting manual modes and Detect mode.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.8
Controls were considered clear and accessible, with labeled buttons, comfortable triggers, and easier top buttons on the updated model.
Convertible handheld design
P1
Product 1: Shark PowerDetect Upright Vacuum
4.4
The detachable pod and powered Lift-Away design added flexibility, though moving around in broken-down mode could be awkward.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.8
The hose and handheld tools gave the upright cleaner above-floor flexibility that reviewers found useful for upholstery and targeted stains.
Cord length
P1
Product 1: Shark PowerDetect Upright Vacuum
4.0
Cord length was viewed as reasonably generous at 30 feet, though not exceptional.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.8
Cord feedback was mixed: several reviewers liked the long reach, while one found the actual length disappointing and another wanted more length.
Cord management
P1
Product 1: Shark PowerDetect Upright Vacuum
2.8
The cord was a repeated convenience drawback because it can get in the way, tangle, and does not retract.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.5
Cord management was positive where mentioned, with reviewers appreciating wrap hooks that reduced tangles.
Crevice / Groove Pickup (Hard Floors)
P1
Product 1: Shark PowerDetect Upright Vacuum
3.5
Hard-floor crevice pickup had mixed evidence: the vacuum was strong overall, but sealed-airflow changes reduced concentrated performance in related tests.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetDebris illumination
P1
Product 1: Shark PowerDetect Upright Vacuum
4.6
Headlights and debris illumination were useful for seeing hidden dust and cleaning darker corners.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetDried-On Stain Removal
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.4
Stain removal was the most discussed strength, with many strong results on wine, coffee, pet mess, dirt, and food stains, though some old or difficult stains remained.
Ease of use
P1
Product 1: Shark PowerDetect Upright Vacuum
4.6
Ease of use was generally strong thanks to automated modes and Lift-Away flexibility, tempered by bulk and some awkward configurations.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.9
Ease of use was a major strength across many reviews, especially the clear controls, upright-vacuum feel, and straightforward cleaning workflow.
Edge and Baseboard Cleaning (Hard Floors)
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Edge and baseboard cleaning was repeatedly praised, including perfect-rating language and strong single-pass results.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetEmptying and Mess Control
P1
Product 1: Shark PowerDetect Upright Vacuum
4.2
Emptying was usually easy, but one reviewer wanted a top-release design to keep hands farther from debris.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.4
Emptying and mess control varied sharply, with some reviewers finding tank emptying simple and others reporting leaks, spills, or frequent emptying.
Filtration / Dust Containment
P1
Product 1: Shark PowerDetect Upright Vacuum
4.9
Filtration was a standout in lab-style reviews, with fog or particle testing indicating excellent dust containment.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetFloor Drying Time
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.5
Drying time was mixed: express cleaning could dry quickly, but max or deep cleaning sometimes left carpets very wet or slower than claims.
Floorhead design
P1
Product 1: Shark PowerDetect Upright Vacuum
5.0
The DuoClean floorhead was widely praised as a central reason for its strong multi-surface pickup.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.5
Floorhead design earned praise for the effective dual brush rolls and wide cleaning path, though one reviewer framed the additions as merely useful.
Floorhead Seal on Hard Floors
P1
Product 1: Shark PowerDetect Upright Vacuum
3.4
Floorhead seal and concentrated airflow were a tradeoff: wider channels helped some features but reduced sealed-floor test strength.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetFresh Liquid Pickup Speed
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.5
Fresh and wet stain pickup was positive where tested, with reviewers reporting excellent or quick pickup on wet-stain lanes and common spills.
Hair-removal channel issues
P1
Product 1: Shark PowerDetect Upright Vacuum
3.0
Hair-removal evidence was mostly positive, with easy brushroll access and fewer tangles, but occasional roller checks were still advised.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHair Pickup — Carpets
P1
Product 1: Shark PowerDetect Upright Vacuum
4.6
Hair pickup on carpets and rugs was very strong overall, though one lab saw long hair wrap during stress testing.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.7
Hair pickup evidence was positive overall, especially for pet hair on carpets and upholstery, though one pet tool comparison was less enthusiastic.
Hair Pickup — Hard Floors
P1
Product 1: Shark PowerDetect Upright Vacuum
5.0
Hard-floor hair pickup was strongly praised, especially the front roller acting like a magnet for hair.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHair‑Wrap / Tangle Resistance
P1
Product 1: Shark PowerDetect Upright Vacuum
4.6
Anti-tangle performance was usually excellent, with several reviewers saying hair did not wrap; one stress test found some long-hair buildup.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHard Floor — Fine Dust Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.9
Fine-dust and small-debris hard-floor pickup was excellent, with single-pass and nearly perfect pickup language across reviews.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHard Floor — Large Debris Intake
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Large-debris intake was excellent in several tests, but oats and extra-large clusters occasionally needed another pass.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHeadlight and LED lights
P1
Product 1: Shark PowerDetect Upright Vacuum
4.4
LED lighting was considered helpful and more pronounced than older Shark lighting in comparative discussion.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetHeating element
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.5
Heating-related evidence was mixed-to-negative because reviewers clarified that ProHeat maintains warm water rather than truly heating water or adding steam.
Hose length
P1
Product 1: Shark PowerDetect Upright Vacuum
2.5
Hose length was a recurring limitation for high or far-away above-floor cleaning.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.3
Hose length was usually helpful for stairs and awkward areas, but one reviewer said larger staircases would require moving the main unit.
Innovation compared to competitors
P1
Product 1: Shark PowerDetect Upright Vacuum
5.0
Reviewers saw the PowerDetect as unusually innovative for an upright because of its multiple new Detect features.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Innovation evidence was positive where mentioned, especially around the cleaner changing expectations for consumer carpet cleaning and offering useful pet-focused features.
Kid-friendliness
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.0
Kid-friendliness was a weakness in the one direct household observation because the machine was loud enough to bother children.
Low-profile design
P1
Product 1: Shark PowerDetect Upright Vacuum
2.7
Low-profile reach was mixed: Lift-Away helped under furniture, but the full upright dustbin and bulky head blocked some tight spaces.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Low-profile evidence was positive but narrow, with one reviewer saying it helped clean under furniture and obstacles.
Maintenance requirements
P1
Product 1: Shark PowerDetect Upright Vacuum
3.8
Maintenance was usually straightforward, but TechGearLab found sand collecting at the foam filter and adding upkeep.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.4
Maintenance was usually praised because tanks, nozzles, brush covers, and attachments were easy to clean, but one test criticized frequent maintenance during cleaning.
Maneuverability and Handling
P1
Product 1: Shark PowerDetect Upright Vacuum
3.9
Handling was mostly good thanks to swivel steering, but bulk and tight-area navigation were common caveats.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.2
Handling was context-dependent: the cleaner could feel vacuum-like and nimble in use, but awkward or difficult to carry when full.
Noise level
P1
Product 1: Shark PowerDetect Upright Vacuum
3.3
Noise was acceptable to mixed: some found the sound pleasant or moderate, while others called it noisy or noted changing mode volume.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.4
Noise drew repeated criticism, with several reviewers calling it loud or very noisy; one later turbo comparison found only a modest improvement.
Odor control
P1
Product 1: Shark PowerDetect Upright Vacuum
3.2
Odor control split reviewers, with some liking fresher floors while TechGearLab found the scent cheap and overpowering.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.2
Odor evidence was moderately positive: cleaning scents were usually pleasant, and pet urine odor improved, though not always fully disappeared.
Onboard tool storage
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Onboard tool storage was praised for keeping attachments housed on the vacuum and harder to lose.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.5
Tool storage was mixed: the included bag was convenient, but lack of onboard hose storage frustrated one reviewer.
Ongoing ownership costs (bags, filters, batteries)
P1
Product 1: Shark PowerDetect Upright Vacuum
4.0
Ongoing odor-cartridge cost appeared manageable in the one review that evaluated replacement cost.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetOverall durability/longevity
P1
Product 1: Shark PowerDetect Upright Vacuum
4.0
Durability evidence was limited but positive, centered on the heavy-duty material impression.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.3
Durability and longevity evidence was limited but positive, tied mainly to durable build language and expectations that the machine would be used regularly.
Overall opinion
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Overall opinion was strongly favorable, with multiple reviewers recommending it or calling it a top upright despite tradeoffs.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.4
Overall opinion was mostly favorable, with several reviewers recommending or praising the cleaner, offset by one lab-style review that did not recommend it.
Packaging quality
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Packaging was positively described as well-packed and protective.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.5
Packaging evidence was positive but narrow, with one reviewer noting the accessories were neatly organized and easy to access.
Pet-Ready Features
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Pet-readiness was a major strength due to hair pickup, anti-tangle behavior, odor control, HEPA filtration, and pet tools.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.3
Pet-focused evidence was mostly positive for urine, pet hair, and pet-owner tools, though one comparison questioned whether the pet upholstery hair trap was actually useful.
Price and Value
P1
Product 1: Shark PowerDetect Upright Vacuum
3.8
Value was mixed to positive: reviewers praised performance for the cost but repeatedly noted premium pricing.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.1
Value was mixed: many reviewers called it a strong buy for performance and features, while comparison reviewers argued cheaper alternatives can be better value.
Reverse cleaning performance
P1
Product 1: Shark PowerDetect Upright Vacuum
4.3
Reverse cleaning was praised where tested, with Direction Detect helping backward pulls and reverse oat pickup.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetSelf-cleaning cycle
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Self-cleaning evidence was strongly positive in the one review that tested the base self-clean feature.
Self-propel feature
P1
Product 1: Shark PowerDetect Upright Vacuum
4.0
The strong suction created a self-propelled feel that some found helpful after adjustment, but it could also feel odd.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetSolution / Liquid system
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.3
The liquid system and CleanShot were divisive: reviewers liked targeted pretreating and easy use, but complained about aiming, splatter, fast spray, and questionable benefit.
Stair Cleaning
P1
Product 1: Shark PowerDetect Upright Vacuum
2.8
Stair suitability was limited by weight, despite Lift-Away making lifted use more manageable.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Stair-cleaning evidence was strong overall, with reviewers praising the stair tool and hose reach, though large staircases may still require moving the unit.
Steam Cleaning
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.5
Steam-cleaning evidence was negative for this model because reviewers framed steam as a HydroSteam advantage that the ProHeat lacks.
Storage footprint and upright-stand stability
P1
Product 1: Shark PowerDetect Upright Vacuum
2.8
Storage and footprint evidence leaned bulky, with reviewers noting a large head or hefty upright form rather than compactness.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.5
Storage was a recurring drawback: reviewers repeatedly described the cleaner as large, bulky, and demanding of cupboard space.
Streaking / Residue
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.0
Residue and mess control were weaknesses where mentioned, including dribbling water and clumps that could leave dirty marks.
Suction and Airflow
P1
Product 1: Shark PowerDetect Upright Vacuum
5.0
Suction and airflow were a core strength, repeatedly described as above average, superb, or able to handle almost any debris.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.8
Testing was split: some reviewers saw strong practical suction or adequate power, while one lab-style test measured below-average suction and another called airflow weak.
Suitability for heavy-duty use
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Heavy-duty suitability was strong for deep cleaning and whole-home needs, especially where reviewers emphasized power and large-home use.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.5
Heavy-duty evidence was qualified; the machine handled many household jobs, but one comparison said it was not as heavy duty for set-in stains.
Suitability for small spaces
P1
Product 1: Shark PowerDetect Upright Vacuum
2.5
Small-space suitability was weak because the bulky floorhead struggled to fit into tight spaces.
P2Product 2: Bissell ProHeat 2X Revolution Upright...
No score yetSupport and Reliability
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Warranty coverage was a clear strength where mentioned, with reviewers highlighting five- or six-year warranties as unusually reassuring.
Tool-change simplicity
P1
Product 1: Shark PowerDetect Upright Vacuum
4.4
Tool changes and configuration changes were usually easy, with quick release and detail-tool use praised.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.8
Tool changes and hose attachment were consistently easy, especially for switching to handheld or stair tools, with the turbo-style cover also praised for simple reassembly.
Under-Furniture Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.7
Under-furniture cleaning improved greatly with Powered Lift-Away, though the standard upright body could block access.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
5.0
Under-furniture cleaning evidence was limited but positive, tied to the low-profile design.
Upholstery / Above-Floor Pickup
P1
Product 1: Shark PowerDetect Upright Vacuum
4.5
Above-floor and upholstery cleaning was strong when using the powered pet brush and detail tools, limited mainly by hose reach.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.3
Upholstery and spot-cleaning performance was generally strong, with several reviewers reporting impressive sofa, chair, cushion, and spot-tool results.
Versatility
P1
Product 1: Shark PowerDetect Upright Vacuum
4.8
Versatility was repeatedly praised across hard floors, carpets, Lift-Away use, and multi-surface configurations.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
4.8
Versatility was a consistent strength thanks to carpet, upholstery, stair, rug, and spot-cleaning uses.
Water tank
P1Product 1: Shark PowerDetect Upright Vacuum
No score yet
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
3.3
Tank feedback was mixed: reviewers liked the large solution capacity and marked tanks, but complained about dirty-tank capacity, sink fit, and frequent refills or emptying.
Weight
P1
Product 1: Shark PowerDetect Upright Vacuum
3.1
Weight was the most repeated ergonomic drawback, even when some reviewers said handling partly offset the heft.
P2
Product 2: Bissell ProHeat 2X Revolution Upright...
2.6
Weight was a recurring concern when carrying or using the cleaner full, although one reviewer noted it is lighter than average carpet cleaners.