I feed Royal Canin but it is the holistic one..called Natural Blend and has no corn in it. Here is the link to the review on the one I use, it tells all the ingredients.

http://www.greatgoldens.com/reviews/...oyalcanin1.htm

They seem to have two grades of food, and this is their higher grade. One thing I like about it is it has a lot of herbs/antioxidants in it, which I personally like seeing in their food.

Good luck if you try it!