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Robot Autonomy, Classified
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ComparisoniRobot Roomba Plus 678 Combo and Shark PowerDetect NeverTouch Pro

Up to three

All robot vacuums. Every figure below is placed against the whole class, so a gap can be read against how much the class itself varies.

Where each one suits you.

The conditions each robot was assessed against, side by side. Rows marked in gold are where these machines genuinely differ.

Fit verdicts by condition for each robot
Condition Roomba Plus 678 Combo Shark PowerDetect Nev…
Home size
Under 1,500 sqft GoodRecharge-and-resume and retained LiDAR mapping comfortably cover a compact single-level home in one scheduled run. Good60-day capacity exceeds needs for small homes; entry cost ($1,299) overkill for compact spaces.
1,500 – 3,000 GoodSystematic LiDAR mapping and recharge-and-resume are built for this range; typical single-level layouts complete in one scheduled run. GoodLiDAR handles 1,500-3,000 sqft effectively; 60-day dock capacity well-suited to large single-floor layout.
Over 3,000they differ DependsIndependent multi-level or large-home coverage testing does not yet exist for this model; recharge-and-resume adds passes rather than eliminating them. GoodCovers 3,000+ sqft; 60-day dock capacity and LiDAR mapping handle large single-floor homes.
Primary floors
Hard floors GoodThe PowerSpin roller and LiDAR navigation are built around hard-floor vacuum-plus-mop runs. GoodDesigned for hard floors; early owner reports confirm strong performance and DirtDetect adaptation.
Low / medium pilethey differ GoodThe roller auto-lifts on low-pile carpet detection; suction performance on carpet is not independently benchmarked. DependsWorks on low-pile but suction efficiency drops; brush design hard-floor optimized.
High pile / shagthey differ DependsNo independent suction or high-pile test results are documented for this model, and rated suction trails the Max-tier sibling. PoorSuction and brush design insufficient for high-pile and shag carpet; early owner reports pending.
Mopping needs
Vacuum only GoodStrong vacuum; the mop lifts or detaches when not needed. GoodStrong vacuum; the mop lifts or detaches when not needed.
Light mopping GoodActive mopping system covers routine floors easily. GoodActive mopping system covers routine floors easily.
Frequent mopping GoodPressure or rotating mop with self-wash is built for frequent mopping. GoodPressure or rotating mop with self-wash is built for frequent mopping.
You want to…
Empty bin myself GoodThe dock automates roller washing and bin emptying, but a hands-on reader can still top off concentrate and run manual clean cycles. Good60-day dock capacity designed for hands-off operation; not suited for frequent hands-on maintenance preference.
Empty occasionally GoodThe AutoWash dock's self-wash and self-empty cycles handle most routine upkeep between periodic concentrate refills and bag swaps. GoodExtended dock intervals reduce hands-on time, but filter cleaning and occasional resets still required; asymmetric maintenance profile.
Set-and-forgetthey differ DependsThe dock automates washing and emptying, but the concentrate reservoir and self-empty bag still need periodic manual refills, so it is not fully hands-off. Good60-day bagless dock and app scheduling enable extended operation with minimal manual intervention.

A robot being poor for a condition is a fact about fit, not a fault. “Depends” means the record names a limit worth reading, not that the answer is unknown.

Keep going.

The full recordiRobot Roomba Plus 678 ComboSpecifications, evidence, the Fit Check in full, and every tracked change.The full recordShark PowerDetect NeverTouch ProSpecifications, evidence, the Fit Check in full, and every tracked change.

Robovations classifies robots; it does not rank them. Nothing on this page is a recommendation, and no manufacturer influences a classification or its placement here.