I have to go with a 3 way tie between Aokiji, Ace, Blackbeard.

I don't know why everyone loves Enels I think it's one of the stupidest ones. Theres no real substance to lightning. At least Kizaru and ace can flame and turn into light a little bit when they get shot. And smoker probably has one of the most pointless fruits in the series IMO. All he can do is make someone choke and help people make a great magicians exit. I actually think Odas using the NW and it's entry as a point to release information about more powerful and more powerful fruits. Like I think that the yonkou have some serious fruit user on their crew.