My vet recommends both wet and dry. The dry keeps their teeth healthy. NONE of my cats (knock on wood) have ever needed any dental work, and they get their teeth checked at every vet visit. I only feed grain-free because I have a cat who develops FLUTD whenever he is fed ANYTHING but Blue Buffalo Wilderness dry. Canned, I am not so picky about. I either feed Wellness canned or Purina Special Diet canned. None of them do well on anything else. I am considering switching to a completely Raw Food diet. Cats are carnivores and meat is what they eat in their wild state. They don't eat corn, rice, or any other gluten fillers you find in some foods. You love your cats, they deserve the best food available.