Does anyone still feed their dog Purina?

I've been feeding Purina One Chicken and Rice for about 2 years....hands down the best food I've ever used. It's so digestable that my dogs only crap once or twice a day and it's always hard and almost black.....never a soft pile. They stay in shape on half or less of this food as compared to anything else I've used. My white dog's hair had always been dull, never shiny looking, when I started her on this food, her hair started to shine and the faint brown spots in her coat even got a bit darker. Yes, it costs about twice what these other foods cost, but when you feed half or less per dog, that equals less money per dog......can't understand what's so hard to grasp about that one.....so yes, I'm a fan of it.