We have only had our pool three years now, it's an 24' AG. We bought a 10 year waranty rcover and we threw it away this year after only three years. I'm going to the pool store this year and I'm going to buy a $60.00 cover. I'm going to throw it away when I open up next. If that works out that's what I'll do from here on out. No more cleaning a cover, no more folding an old cover, no more stinkyness, etc. I'll just figure the price of the cover into the price of having a pool. So, in my opinion the best cover is a "new cover".