Recommend any good puppy/dog foods?

My Schnauzer would not eat any of the dry foods I bought, even the "premium" foods. He is 7 and for the past 5-6 years he has been eating Royal Canin "Special 30". This dog absolutely loves this food and it makes you feel really good when a picky eater loves his food. It is very nutricious and my Vet agrees it is good for him. It isn't the easiest to find but PetSmart usually has it.