Unfortunately, in this case, I'd say "nothing" might have had a slight edge. Despite the "tastes more like regular Dr Pepper" claims, the artificial sweetener taste is still pretty strong, and there wasn't enough Cherry or Vanilla to make it worth while. All in all I would give it 2 ½ thumbs up out of a possible 5. If you know of a way to procure me a sample of the non-diet version, I'll be your best friend.