Ferrari Enzo 
Mercedes-Benz SLR McLaren 
Porsche Carrera GT 
The Enzo has the most beautiful interior, the SLR is a gr8 car but not compared to these and the Carrera GT is the most beautiful between the 3.
Essentially on alot of tests the GT is the fastest that i've seen of the 3.
I'd most likely choose the Carrera GT becuz of it's beautiful interior, gorgeous styling and fast as all hell.
EDIT: No damn clue y i put the
Veyron in there instead of the SLR.