iRobot Roomba Plus 515 Combo vs Roborock QV 35S Robot Vacuum and Mop

The Roomba Plus 515 Combo is the more complete machine: it washes and hot-air dries its mop pads, refills its own water tank, lifts the pads 10 mm over rugs, and works with Alexa, Google Assistant and Siri. The Roborock QV 35S is a simpler vacuum-and-mop with a larger onboard dust capacity and Alexa only. Pick the Roomba if mopping and hands-off maintenance matter; pick the Roborock if you mainly vacuum and want a straightforward, sturdy unit.

• Choose the Roomba Plus 515 Combo if you want mopping with self-washing, self-drying pads and a dock that refills water and empties debris for months.
• Choose the Roborock QV 35S if vacuuming is the priority and you want a larger dust capacity without paying for a mop-washing dock.