Best Jazz pianist

How can there really be a "best"? Oscar Peterson? Benny Green? Bill Evans? Duke sure could swing. One I have really been enjoying lately but don't hear too much about is Ahmad Jamal. He might be my "best" when the mood strikes me. He has a different style that is certainly his and his alone.

I should correct something I said earlier. I said the Duke could swing, but I meant the Count, as in Basie. Not that the Duke doesn't swing, just not on the piano. Hard to believe I got them mixed up.