The BEST dog food is the one that works best for your dog.
What brand is your dog currently eating?
There are so many choices, including:
Orijen
Acana
Fromm
Petcurean's Go! and Now!
Taste of the Wild
Wellness
Merrick Before Grain
Castor & Pollux
Pre-made raw: Primal, Nature's Variety, Stella & Chewy's
Everyone has their favorite.