I have tried cheap cat foot and expensive food. Both my cats eat Science Diet Optimal dry food. But my male will not eat any wet food but Friskies. I have tried him on the real expensive wet food and he turns and walks away. Since he has done well on it, I will continue to use it. How expensive a food is doesn't mean it is good. I have always used Friskies and had no problems. My vet said if he likes it then don't change. When I got my female from the humane society, they gave me a bag of Science Diet. I already had other dry so I mixed them, and both of them like it. And the kibble is small.