I only have one kind of cat food. Science Diet Sensitive Stomach. I've always fed them SD. I keep it in the bottom cupboard in a covered kitty litter bucket. Keeps it fresh and the ants out.

I used to feed my cats canned food but noticed they were leaving alot of it in their dishes. So I stopped buying it. It makes a big difference in the amount of "waste" they produce. Plus there's no smelly cans to recycle, and it saves me money.