My opinion is the blue bag retriever way outperforms the Diamond. Can't remember but I think the first ingredient in the Diamond was corn. Meat and bone meal is first followed by corn in the Retriever.
Can't beat the Victor though. At first I could not bring myself to pay $25 for a 40#bag of food but I feed a lot less and they look great. Good stamina and less poop. Blue bag for the CD's and yard dogs and Victor for the strike dogs. I believe the price about evens out in the end.
if you are talking the hi energy Diamond it is Chicken bi product then corn. Meat meal on the retriever. If you have tried both and liked the retriever i may try that next time. Seems like a few people are having good luck with that and the price is great. with the Diamond i am feeding most of my dogs 3 cups per day and my bigger AB'S get 5 cups. Dogs look awesome but if i can save a few bucks and keep the dogs looking and performing great it is worth a try. Good info. thanks ya'll.