We feed Niko and Hazel Royal Canin Kitten Sterilized. Its getting about that time to start thinking about moving up from Kitten stage food. I am torn between Royal Canin Sterilized or Royal Canin Sterilized Appetite Control or Royal Canin Sphynx breed. I can get them on the website I order their food through. Im just so torn. Royal Canin Sphynx dry food special composition for Sphynx cats, adapted energy content, support of the heart function, special nutrient combinations for a healthy ski or Royal Canin Sterilized 37 Cat food for neutered cats with a tendency to overweight, controlled energy intake, addition of L-carnitine for lean muscles, support of healthy urinary tract or Royal Canin Sterilized Appetite Control Cat food for castrated cats 1 to 7 years of age who are prone to increased food intake to support healthy urinary tract Thanks!