Maybe I’m one of the minority, but I do not care for any products by Champion Pet Foods (Acana & Orijen). So personally I don’t think they are “the best”. The best food for any large breed puppy is a food that will promote optimal growth (low calorie, appropriate ca/phos), digests well, is feeding trialed on large breed puppies, and something they will eat. I prefer simple foods that focus on more on proper nutrition than being flashy. Those foods are not going to be produced by smaller companies usually because they don’t have the funding to research and test foods.
A quality puppy food designed properly for a large breed puppy will have balanced levels of everything you mentioned. Not some balanced and some in excess.
