My preference would be one of the Acana grainfree formulas. Just from MY point of view, and MANY don't agree with this, I think Orijen is pretty high protein wise, ESPECIALLY for a dry food.
Both are good foods, excellent, really, but I just would go with the Acana over the Orijen. That's just me, though.
Please remember to add about as much water to the food as there is food -- when you feed a kibble their body really needs the extra h20 to process it!