Roborock S8 Max Ultra vs Shark PowerDetect 2-in-1 Robot Vacuum & Mop

The Roborock S8 Max Ultra is the stronger cleaner and the more automated system, with higher suction, a dock that refills and drains its own water, and hot-water mop washing and drying. The Shark PowerDetect is the easier one to live with day to day: it self-empties for up to 60 days, self-refills and cleans its mop, and its 481 owner ratings are more mixed than the Roborock's smaller set. Pick the Roborock for deep carpet cleaning and true hands-off mopping; pick the Shark if you want a simpler, lighter all-in-one with HEPA filtration and a long battery.

• Choose the Roborock S8 Max Ultra if you have a lot of carpet and want the strongest suction plus a dock that refills and drains water so you never touch the mop.
• Choose the Shark PowerDetect if you want HEPA filtration, a lighter unit, and a self-emptying base that holds debris for up to 60 days.