I'm sure there has been many threads about this but I don't think I have ever seen a poll for it.
I say Piper, i've always thought his heel work was incredible, as was his whacky face work. He showed the current generation how it's done on the old school Raw.
2nd place Flair, the only thing that doesn't make Flair #1 for me is most of his promos were very similar and he didn't have as much range, other than shouting like a man posessed and then calming down, then shouting again.