Orijen is fab fab fab ......
Heidi is Atopic & Orijen seems to be the only food to keep it at bay. I am currently feeding her on the Regional Red Orijen, as it seems to fill her better than the fish or chicken. Its actually fit for human consumption too, not that I wish to try it out, LOL.
My last boy had AF, so I can understand where you are coming from with regards to a grain free diet.
There is also another brand of grain free kibble on the market called Taste of the Wild
Taste of the Wild : Home, Zoo plus have currently started to sell this product.