Well, I have to agree with the majority here. I would choose the F1 over the McLaren anyday.
And it is precisely because it does a little sliding (I haven´t got it yet ingame, but I vividly remember Tiff driving it hehe). I really love cars that are "alive" in the way that you have to fight them a little and can get a little poweroversteer on fast corner exits.
Modern "almost-race-cars" like the enzo do not really allow this kind of driving. In hairpins maybe, but not in faster corners.
All in all, knowing the history of the F1 pretty well, I think there is just more love in this car. I would allways choose the dream of one single person, executed to near perfection, over the efforts of a company, generally speaking.