Check out Horizon. I fed my dog Acana and Orijen (he's a 120lb Wolfhound mix with various allegies) and he did very well but it was breaking my wallet. Horizon is a lesser known company but is very similar to Acana and Orijen in relation to protein levels and food quality. The only real difference is that they're in Saskatchewan and not Alberta and they use lentils and peas as a carb instead of potatoes which actually seemed to help with my dog. He used to have chronic ear infections but hasn't had one since switching the food. I've read and heard something about potato based carbs potentially causing ear infections because they promote yeast growth but I'm not sure other then it seems to have made a difference.
The main selling point for me? It's just as good quality wise but it's cheaper. The Pulsar is Acana's equivalent and is $50 for the large bag which cost me $65+ with Acana and the Legacy is equivalent to Origen costing $65 for the large bag where the Orijen here is $75+. The only draw back to the Pulsar is that is only comes in chicken flavour and chicken & whitefish. Tried both with my dog but he's on Pulsar right now just based on price.
http://www.horizonpetfood.com/brands