We switched all three of our girls to Acana grain Free (they were on Wellness Core previously).
They seem to be really thriving on Acana--it is made by the same company that makes Orijen, but it has lower protien. We are really happy with it and noticed a different in their coats immediately!
Champion Petfoods | ACANA | Products - Puppy Small Breed
Everyonce in a while they get a tablespoon of Wellness Soft food mixed in with their dry food as a treat.