The only automatic vac we've ever had for our 18' AG pool was the patriot that came with it. I know why they gave it to me, because it stinks. LOL It was always getting stuck on the stairs. Friends have an Aquabug and it works really well for them. I also like the Zippy which is a pressure side cleaner unlike the Aquabug. I like that it says it can be run under the solar blanket. Does anybody have any feedback on either one of these vacs, or have another one that they really LOVE?