We use
Dick Van Patten's Natural Balance
Wet and Dry cat food

It is supose to be the best and really not that expensive.They sell it for all kinds of animals and is sold all over the world to the zoos and house pets.It's very healthy.
If there isn't a store near you who sells it,the company will give you phone #'s of where to call to get it delivered to your home or will tell you where the closest place is to go buy it yourself at the store.
The cats love it.
1-800-829-4493 to call them
or
www.naturalbalanceinc.com