We like Precise Naturals Endurance, which we used to buy locally from our Brittany breeder for $20 a bag. It’s now costly at $60 for a 40 pound bag. Purina Pro Plan SPORT All Life Stages Performance 30/20 protein to fat Formula Dry Dog Food, which comes at $48 from Amazon and used to be $38 for a 37.5 pound bag. Both are 30/20 ratios, which is great for active sporting dogs. I have a friend who is a nutritionist and scientist for Purina and other dog food manufacturers and he suggests that any medium end dog food from a major manufacturer is going to be adequate, but he thought both of these mixes were very good.
The hunt uses Diamond Hi Energy Sport Dog 50# at $26 a bag, which is a 24/20 ratio.