we just started our two on Acana Grasslands and are going to rotate with the Orijins Regional Red. Both are a grain free food with meat being a base food. Most of the pet store bought food like iams is grain-based. taste of the wild is also a grain free food and i hear is good also. both are compairable and on the pricey side but with all the benefits in feeding them really GOOD product, Im thinking it will be worth every dollar we spend on it. there is a really good artical on the home page about the best dog food to feed pit bulls.