I haven’t had Faygo, but I find Mr. Pibb very nasty. It’s an acquired taste, much like DP, and it’s not one that I’ve acquired. My friend drinks it, and I make fun of her for it.
What really irritates me is that so many restaurants are carrying it now, instead of Dr. Pepper, because Coke is offering it to them for free if they don’t offer DP. Most of the movie theaters around here went with it.