I had Ozzy on it for a long time and he did really really great on it. Unfortunately there first place I bought it at stopped carrying it and the only other place to get it sells puppys, so I refuse to buy from them.
I had Sawyer on the Duck variety for a while and he did fantastic on it. I wish it wasn't almost $70 a bag, because I'd like to be able to go back to feeding it.
Its good food, but hard to come by, they recently had an offer for a free 5 lb bag of rabbit formula, Uno wouldnt touch it so I gave it to my neighbors golden, who went nuts over it and tore through the bag to get it.