Always have used Purina Pro Plan (its high end Purina dog food) never had any issues, both of my dogs are healthy. Use the same brand for all the foster puppies as well.
Just remember some dogs have sensitive stomachs, do not just switch the food right over, gradually add in the new food to the old, a little more of the new stuff each day until completely switched over. Also start with a small bag just to see if your dog will even eat another brand.