I fed Nutram for awhile, a long time ago. But there are ALOT better foods on the market. Acana, Orijen, Taste of the Wild, Blue Wilderness, First Mate, Addiction, Merrick, Fromm, Go, Now, Chicken Soup for the Dog Lover's Soul, and Horizon are all excellent foods that I feed my dogs. (they get something different every meal)
As for the type of foods, I give them pretty much everything. Dry, canned, raw, dehydrated raw, home cooked, whatever I want really. Dogs are scavengers, meant to eat a variety. I believe alot of sensitive tummies are caused by the fact we feed our dogs the same thing day after day, besides, they get alot of different nutrients this way.