Eufy Clean X9 Pro · iRobot Roomba Plus 678 Combo

The Auto-Wash Station is the purchase argument; without it, the X9 Pro competes at a feature tier that newer platforms have largely overtaken on suction.

Mop pad lift works on low to medium pile. High-pile and shag are a documented failure case, not a fringe edge.

The AutoWash dock hot-washes and heat-dries the roller mop and auto-empties the bin, but that is more moving parts in the dock than a dry-empty-only station, and none of it has independent long-term reliability data yet.

Undercuts the Max 875 Combo by roughly $300 with the same AutoWash dock architecture, but at lower rated suction (30,000 Pa), so the price gap likely tracks a real carpet-cleaning gap, not just branding.

Homes with high-pile or shag carpet throughout

Mop pad lift clears low-pile carpet reliably. Owner reports describe mop pad drag and moisture transfer on high-pile and shag; the pad lift height is insufficient to clear thick pile fully.

Owners needing maximum suction for deep-pile vacuuming

Suction ceiling trails newer flagships from Roborock and Dreame introduced in 2024 and 2025. For heavily soiled thick carpet, those platforms deliver documented higher Pa figures.

5 GHz-only Wi-Fi network households

The X9 Pro connects to 2.4 GHz networks only. Homes with 5 GHz-only router configurations require network adjustment before setup; press reviews note this as a recurring friction point.

Sub-800 square foot apartments prioritizing compactness

The Auto-Wash Station footprint is larger than basic docks. Compact apartments may find the station's floor-space requirement disproportionate to the cleaning area it serves.

Homes with thick or high-pile carpet needing deep-clean suction

No independent suction or high-pile test results are documented for this model; iRobot's non-flagship Combo units have historically shown reduced pickup on thick carpet.

Buyers who want the Max tier's higher rated suction

The Plus 678 is rated at 30,000 Pa; the sibling Max 875 Combo carries a higher published suction figure, so serious carpet cleaning likely favors the pricier model.

Very large or multi-level homes needing single-pass coverage

Independent multi-level coverage testing does not yet exist for this model; recharge-and-resume adds passes rather than eliminating them on large floor plans.

Buyers who need proven multi-year reliability data before purchase

The model shipped twelve days before this assessment; no independent failure report, teardown, or owner-forum thread yet exists to evaluate the dock's hot-water wash mechanism or the robot itself.