Bought this one, a Nitro Wall Scrubber. It climbs up the walls to the water line, drifts down and goes at it again. 24 volt transformer on the deck. It picks up leaves, acorns, just about everything. Can't seem to get up the steps, but it cut my pool cleaning from 1/2 hour to 1-2 minutes, runs for three hours and shuts off. It has tank treads and a big inside filter bag. Saw them up to $1,200 online, got it free shipping, no tax for $650; they make a non wall climber for $550. I wanted to call it "Donna's Cuban Pool Boy", but we settled for "Tank".
