Was feeding our BC pup Purina One, and she was looking quite good on it. Coat was nice and shiney, plenty of energy. But switched to Eukanuba Medium Puppy, as the vet said it will help a lot more with her growth, and doesn't need anything else in her diet. Is going well on it, has seemed to put on a bit of weight and nice coat, plenty of energy, and very intelligent. Even though its a bit dearer, will probably stay on eukanuba for the first year, as it seems to be doing well for her.