iRobot Roomba Combo j9+

I picked this one because it vacuums and mops in a single run while its base both empties the bin and refills the mop water, which cuts down on the usual robot-vacuum chores. It earned a spot here for that two-in-one convenience and its obstacle-avoidance smarts, which matter in busy homes with pets. Before you order, check that you have space for the larger base and confirm the mop setup suits your hard floors.