Was reading your post and just curious. When I adopted my baby, he was already eating Science Diet. I read in his paper work that his previous owner was feeding him Purina One, I beleive it was. I noticed that where I live, grocery stores don't sell the Science Diet. I buy it from Petco and it is pretty expensive, or more so than the rest of the foods. I'd never heard anything bad about the Science Diet other than the price. I was just interested in what it was that you heard negative about it? I plan to switch it sooner or later..