I have tried many kinds of different foods. Since Rosie has IBS, we are on Science Diet I/D. I feed her and Mikki this. I use the dry and the can as well. I feed them twice a day with a dry/can food mixture. Before going to SD per vet recommendation, I used Instinct which she seemed to like. Here is a link about numerous different foods available. Maybe it will help.
Dog Food Comparison Chart - Dog Food Ratings of Premium Dog Food and Supermarket