I had two other cordless pool cleaners. They did ok on the bottom but got stuck on the drain, confused by the shape and had no cleaning options. the WYBOT C1 does great on the walls, seating ledge, steps and bottom. The default wall then star-pattern bottom cleaning doesn't get stuck. The cell phone app allows optional patterns for quicker floor cleaning, when needed. My WYBOT C1 is my favorite pool cleaner.