I'm thinking I want to switch Hank onto a different food. He's on Orijen right now and his tear stains have never been worse. Maybe a change in food will clear it up. I was looking into Taste of the Wild. Those that feed their dogs this (or have in the past), how did your dog(s) do on this food? Or any other food suggestions? Also, Hank's got a senstive stomach, would the fish based food be easier on him in comparison to the other blends?