2006 Ferrari 612 Scaglietti F1 2dr Coupe (5.7L 12cyl 6AM)
Best controllable acceleration ever witnessed in a vehicle. Breaking is mind blowing. Handling exceptional (except tears through $400 tires). Seat comfort and visibility are the best I have witnessed in Ferrari lineup, and I am lucky enough to have owned 3 prior.
Gotta be the exhaust and outright animal acceleration and breaking.
Gas tank is too small, MPG is way too low. Otherwise complete and total perfection, almost unbelievable.