First choice would be R8. It's an exotic. It's a head turner. It's sex.
Second choice would be the GTR. The power to destroy anything on the road...wow. And by anything...I mean I would only be scared of an Enzo rolling up next to me...and even then, I wouldn't be that scared. Plus the cock pit looks like a Jet fighter!!!!
But I would NEVER complain about having an M3 of course. ha.