Should I buy the Roborock Q Revo Pro or Roomba Combo j9+?

Buy the Roborock Q Revo Pro if you want the better all-around robot for mixed vacuuming and mopping with less fuss. It’s the safer pick for most homes because Roborock’s strengths are navigation and mop automation, and the Q Revo line is especially appealing if hard floors matter.

Choose the Roomba Combo j9+ instead if your top priority is carpet pickup and you prefer iRobot’s obstacle-aware, Roomba-style cleaning approach. Roomba models are often stronger on raw carpet cleaning, but the j9+ is usually the less compelling value if mopping and dock automation are major reasons you’re buying.

My short verdict: Roborock Q Revo Pro for most people; Roomba Combo j9+ for carpet-heavy homes or people already committed to Roomba.