[MarleysMama]

I don't think one is necessarily better than the other, just a matter of what your dog tolerates the best. I know a few people who tried the herring and sweet potato just b/c they had issues with other protein sources. I am not certain what the main ingredient is in the Innova you were feeding, but I know it's chicken meal in Canidae...so maybe try a CA Nat that has a protein source other than Chicken... perhaps even the Lamb variety?

I have not searched personally, but be sure that the calcium:phosphorous ration is as close to 1:1 as possible. I remember reading somewhere that the protein shouldn't be more than 21% but I know Orijen protein % is much higher than that but it's fine for pups.

Hope this helps :)