The best ones are Orijen Regional Red [here you have the link to purchase it
] and Merrick Grain-Free Dog Food [LINK
Orijen, as you may know, is currently the best nutrition available in the market. The one I recommended you, is a heavy meat recipe that contains different protein resources, everything low-carbs. But they are also incredibly expensive, íthat's the only con you could find! But this is what you expect from a food made with such good quality ingredients.
The Merrik food is pretty balanced and contains fruits and vegetables, and also supplements for your dog. It also has a much more reasonable price. I also recommend it for peaky eaters, most dogs love its taste!!
Of course, there are other ones, such as Solid Gold High Protein Recipe, and Wellness CORE Grain Free.
Those are the ones I know of. íLet us know what you choose!