iRobot Roomba j9+ vs Shark UV Reveal PowerDetect Robot Vacuum

The Roomba j9+ is the simpler, more reliable pick for carpet-heavy homes and anyone who wants a vacuum that empties itself and stays out of the way. The Shark UV Reveal does more: it mops, scrubs, refills its own tank and sanitizes its pad, so it suits hard floors and homes with sticky or pet messes. Owners are split on both. The j9+ has a modest 3.3 out of 5 from 208 ratings, with complaints about navigation and app quirks; Shark buyers praise the UV stain detection and mopping but the extra plumbing means more to maintain.

• Choose the Roomba j9+ if you mainly have carpet, want strong pickup with a self-emptying base, and prefer a simpler machine with fewer parts to clean.
• Choose the Shark UV Reveal if you have hard floors and pet messes, and you want vacuuming plus real scrubbing, self-refilling and a self-sanitizing mop pad in one robot.