First off I would like to say I enjoy reading the many posts in this forum and this being my first post hope for knowledgeble input. I am entering my second year of having an above ground pool (27') and want to purchase a automatic cleaner. The pool store that I deal with stocks both the Robo Kleen and Pool Rover. I would like some input on both models. The million dollar question is do they work? Thanks in advance for any input. Dave