So I’ve been wanting an Aquabot Rover robot vacuum for my above-ground pool but the reviews are so all over the place for the different models. Can anyone recommend a good model that is compatible with AGPs? My budget is no more than $400! Also, would it be dumb to buy a gently used one off eBay if they have a 30 day return policy? I have found some on there at great prices but I still don’t know which model to get! Any advice would be much appreciated! Thanks in advance!