We have been feeding Copper Merrick foods, both dry and canned, for about a year now. It has a lower grain content (not the first ingredient) than what he was getting (sience diet). I think that it totally makes a diffrence in his engery level and the health of his skin and coat. I have noticed since we switched he is "itchy"
less often and his fur is a lot healthier looking.
As far as price goes, I would rather spend a little extra on the food and a lot less at the vet.
BTW: The Merrick canned food smells good (for dog food) and looks a lot like people food. I don't want to feed my pets something that makes me want to vomit when I put it in their bowl.