Well it all depends on what you are looking for in a food and what you think your dog will do well on? Are you feeding regular Blue? Wilderness? Also, what kind of price range are you looking for or does it matter?
I feed mine Orijen, ill do a month or two of 6 Fish and then a month or so of Regional Red to give them a diverse Protein intake. Pricing for these is 6 Fish; $75 and Regional Red; $80 depending on where you go it may be cheaper but that is the typical average.
For my dogs, ive never had a greater success than with Orijen. Helps with conditioning and maintaing as well as overall appearance, health, etc. Stool is small, consistent and they only need to poop once after each feeding. Occasionally twice but not usually.
High Protein diets some agree with some don't, i have found as long as you keep them well hydrated and give them at least 30 minutes after eating to let their food settle theres no problems. I've always fed a higher protein with any dog i've owned both past and present.