I feed Leo Bil-Jac Select and he loves it. I used to feed him Science Diet but he is a finicky eater and I would have to doctor it with can food. The Bil-Jac he eats as is. He also has a sensitive digestive system and gets frequent diarreah but since I've had him on Bil-Jac, they have been less frequent (usually only when he eats something he's not supposed to - like my socks) lol. The Bil-Jac is about the same price as Science Diet but there are only a couple of pet supply places that carry it.