I had my cats on Science Diet since they were babies. I switched to the Nature's Best for a while. Then my friend told me about Felidae, an all natural cat food. I gradually introduced it to them and they love it! I also split one can of ProPlan (it's chunks of fish in a gel and they gobble it up) between 7 cats in the morning and evening, just as a treat. Since I've switched, I've noticed their coats are shiny and soft. Big difference.