When I worked at a pet store I would get a free bag of GO! per month and a free medium bag of any Orijen/Acana product per month. My dog did fine on the GO! He does good on anything though I can't say I ever noticed anything that made me like or dislike the GO GF more than any other food I have ever fed him. I found in comparison to Orijen/Acana I would feed the same amounts as the GO GF but whenever I used the NOW GF I would have to up his food or he would lose weight. So I liked the GO GF better than the NOW GF.
Now that I pay for dog food it is a brand I would still purchase