I have an Aguabot that I have had for over 10 years. Every now and then I have to replace a belt or track, the bags hold up and hold alot. I have a 20'x40' in ground concrete pool with stainless sides. It travels to the top and then goes back down. It will also climb the stairs. It has a timer and a remote, but I usually turn it on and put it in at night and let it walk all over the pool while I sleep. The pool is close to pine trees and my neighbors tree that buds all summer with these irritating yellow pods :-/ . Cleans it no problem.