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Robot Autonomy, Classified
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ComparisonEufy C28 Omni and iRobot Roomba Plus 678 Combo

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 Eufy C28 Omni Roomba Plus 678 Combo
Home size
Under 1,500 sqft GoodCapable for compact homes, but the full dock automation and 216-min runtime exceed what smaller spaces typically require. GoodRecharge-and-resume and retained LiDAR mapping comfortably cover a compact single-level home in one scheduled run.
1,500 – 3,000 GoodLiDAR mapping and 216-min vacuum-only runtime cover this range in a single charge under standard conditions. GoodSystematic LiDAR mapping and recharge-and-resume are built for this range; typical single-level layouts complete in one scheduled run.
Over 3,000 DependsCombined vacuum-and-mop runtime drops to 123 min; large open-plan homes may require mid-clean dock returns to complete full passes. DependsIndependent multi-level or large-home coverage testing does not yet exist for this model; recharge-and-resume adds passes rather than eliminating them.
Primary floors
Hard floors GoodHydroJet roller with 9.8N pressure handles dried spills on hard floors; mop pad lifts 10.8mm at carpet transitions. GoodThe PowerSpin roller and LiDAR navigation are built around hard-floor vacuum-plus-mop runs.
Low / medium pile Good89% carpet debris removal in Vacuum Wars testing; mop pad lifts automatically to avoid wetting low-pile carpet. GoodThe roller auto-lifts on low-pile carpet detection; suction performance on carpet is not independently benchmarked.
High pile / shagthey differ PoorNotebookcheck testing documented stalling and failure to navigate 25-26mm pile height rugs. DependsNo independent suction or high-pile test results are documented for this model, and rated suction trails the Max-tier sibling.
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 5-in-1 dock is optimized for minimal owner intervention; hands-on buyers may find the automated system unnecessary overhead. GoodThe dock automates roller washing and bin emptying, but a hands-on reader can still top off concentrate and run manual clean cycles.
Empty occasionally GoodDock handles emptying, washing, drying, and refilling automatically; owners need to empty the 2.2L wastewater tank and replace bags occasionally. GoodThe AutoWash dock's self-wash and self-empty cycles handle most routine upkeep between periodic concentrate refills and bag swaps.
Set-and-forgetthey differ Good3L dust bags rated up to 75 days; full dock automation covers all daily post-clean tasks without scheduled owner action. 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.

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 recordEufy C28 OmniSpecifications, evidence, the Fit Check in full, and every tracked change.The full recordiRobot Roomba Plus 678 ComboSpecifications, 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.