We have been using Iams brand for years now. The quality of ingredients are exceptional.
I tried IAMS and he has been very happy with it for the past four years. He does not have any problems digesting his food and he is always eager to eat.
We have used Iams before it became widely available. We have raised all our dogs on Iams, and each and everyone greatly outlasted normal lifespans. We have one small, one that is now 18 years old and still going strong.