Then what dog food available in a grocery store (that part is non-negotiable, MUST be available in typical grocery stores) is good...that is not named Purina One? Jake doesn't like Purina One, never has. It is why I switched to Purena.
I understand completely understand and that was a big deal to us also. Iams was the best I could get at most supermarkets. I thought it was a great food until you actually search some sites dedicated to breaking dog foods down and rating them. It blew me away how bad normal supermarket food was for your dog.
Even foods like science diet, Iams, and all purena products had really low rankings. I think that vet still say that these foods are fine because you can't tell a mom with 4 kids and a mortgage that she is killing her dog if she don't shell out 2 bucks a pound for food. They would not come back to that vet.
If you ask which is better you will get another answer. Your dog will most likely be fine on those foods just like grandpa lived all those years on fried bacon and lard. But it is hard to argue which is better.