I had Jake on Orijen Large Breed Puppy, while he was on it his poops were always runny, and he had hives and was losing patches of fur, his skin and fur always stunk and he has horrible acne on his face. I met with the breeder last month that I got him from and he said that while Orijen is a good food the bullmastiff's don't do well on it and it was something in the food causing his skin issues. He recommends a raw diet, but that is not feasable for my family, so as an alternate he recommended the Kirkland Salmon and Sweet Potato. I researched it and looked at all the recall information that was out recently and in spite of that decided to give it a shot. Over the last month of switching him over there has been a noticable difference in his skin and fur, his poop is a lot firmer and his acne isn't nearly as bad as before (plus he doesn't smell so bad either).
I have to agree with Duke, do the research and decide for yourself.