Edit: Bumping Thorpe for Cairoli
SX was not considered when I came up with this list. This is my top 10 best, not necessarily fastest as in raw speed or Magoo and Stewart would be on there. I think the top 3 are pretty much not debatable and could go in any order. The rest of the top 10 is very debatable because there are so many great ones I'm probably forgetting and there really isn't room in the top 10.