So the big marketing phrase now is "grain free." But how much should I pay attention to that? Sure, grain free is good, but if a certain brand has grain but is still low carb, is that still good? What about the cat foods that are grain free but have potatoes and other starches in them? I guess what I want to know is if grains = potatoes/starches = carbs in general. Or is having grains worse than having potatoes and other starches?