For a non-Pinkberry town, its tart is okay but not great but I haven't found a good tart yogurt in Phoenix.
But its peanut butter yogurt is amazing! Worth writing home about, or at least yelping about. I'm not a big flavored yogurt fan but that was worth getting and I'll get it again when I go back. It had a quality yogurt taste. Perhaps they use real peanut butter, who knows? If you like peanut butter, check it out!