Senna is/was an enigma. No doubt he could drive but the way he carried himself, I think, somewhat pushed his hero-status to what it is/was. I know he did an awful lot for charity and as a human being he seemed to try and do the right thing and be a beacon for his country. I can't really slate the guy but for me he isn't the best. Sorry fanboys!!!
Schumi'? Questionable TCS in the Benneton, cars and tyres developed around him at Ferrari, plain average on his comeback. When he couldn't get his own way he would cheat or moan. Much like Senna would to be fair. I don't dislike Schumacher, he comes across as a nice guy and there's no doubt that nobody has ever had as good a connection with a car as what he did with those cars of his. Great driver yes, multiple champion, yes. Best ever though, not for me no...
Sir Jackie Stewart, well, he is just THE man. The way he carried himself away from the track in his family life is for me an example that a lot of people could learn from. The way he pushed for tighter safety controls and wasn't afraid to stand up to the men in suits, the reasons behind his retirement and what he did after it to make the sport safer for everyone from F1 down to Formula Ford. He led from the front and wasn't afraid to be the one doing the talking and taking the flak. That to me makes him the best champion. THE champion.
Saying that the polar opposites to Jackie were James Hunt and Mike Hawthorn and they were two sides of the same coin. I love the pair of them for their complete madness and sheet bloody-mindedness. Both worthy champions but a part of me thinks the pair of them wasted their talent somewhat.
It's interesting that nobody has mentioned Kimi or Mika yet!?!
Or even Prost or Lewis or Jenson!?!