Zonda.
The Veyron is slower and less brutally insane. A supercar should be insane. It should be impractical. It should be loud, thirsty, unreliable, and difficult and scary to drive. When I get behind the wheel of my supercar and am forced by law to drive at the ridiculously low speed limits, I still want to have a blast driving it. I don't want to get into a car that has the interior of a Bentley, with the smooth forgiving ride of a RollsRoyce. Driving such a thing at 65mph would be no more exciting then driving an Audi A4. No thanks. Give me the insane one that'll try to kill me.