My parents and my brother switched their dogs from Iams to Artemis Miximal and they really seem to like it. (the dogs and my family). One of the dogs is 4 years old and she keeps up playing with my 10 month old puppy whereas she didnt have much stamina before.
Artemis Maximal is my top choice for dog food! It is the best I have yet to find. The first and fourth ingredients are named meat products, there is a good amount of meat in the food, and it contains all quality ingredients.