Roborock S7 Max Ultra vs iRobot Roomba Combo j9+

A detailed side-by-side comparison scored on 14 objective criteria with weighted scoring (max 12 points).

WINNER

Roborock S7 Max Ultra

Roborock — #19 overall

7.7/10

$799

iRobot — #25 overall

6.7/10

$999

Roborock S7 Max Ultra edges out iRobot Roomba Combo j9+ with a 1.0 point advantage.

Criteria	Weight	Roborock S7 Max Ultra	iRobot Roomba Combo j9+
Total Score	—	7.7/10	6.7/10
🗺️Navigation & Obstacle Tech	2x	85%	85%
💨Suction Power	1x	82%	82%
📐Edge Cleaning	1x	82%*	75%
💇Tangle-Free Rollers	1x	85%	85%
🧹Mop System	1x	85%*	65%
🔥Mop Drying	0.5x	85%*	0%
🧴Integrated Soap	0.5x	80%*	0%
🔄Mop Versatility	0.5x	45%*	25%
🗑️Auto-Empty Reliability	1x	88%	88%
📦Bin Capacity	0.5x	82%*	78%
⏱️Refill Frequency	0.5x	85%*	75%
🧗Obstacle Mobility	1x	35%	35%
📏Low Clearance	0.5x	45%	60%*
📱App Quality	1x	90%*	82%
Price	—	$799	$999
Pros		+Excellent value when discounted +Proven reliability +Full dock automation +Sonic mopping	+Trusted iRobot brand +Retractable mop lifts fully +Strong obstacle avoidance +Self-emptying base
Cons		-Previous generation -No AI obstacle camera -Less suction than S8 line	-Mop is basic (no wash/dry) -Expensive for features -No hot air drying
Suction		5,500 Pa	4,000 Pa
Navigation		LiDAR	Camera + AI Avoidance
Mop Type		Sonic + Auto-Wash	Pad
Self-Empty		Yes (60 days)	Yes (60 days)
Runtime		180 min	120 min
Mobility
Obstacle Climbing		Standard	Standard
Retractable LiDAR		No	No
Adaptive Chassis		No	No
Multi-Mop Switch		No	No
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