I just bought the DIver Dave version. It works pretty good for the most part. It seems to have a slight problem going up the cove and cleaning by the walls. I dont know if that just because my pool is dirtier than normal. The only other problem I have it sometimes it wants to flip over. I think that may have to do with the way my return is positioned.

I am quite happy with the Hayward Diver Dave cleaner and for the price I dont think you can beat it.