Ferrari Enzo: This car is a complete beast, I've left it completely stock and before I finish any session of GT I take it for atleast one lap around the Ring on Sport Hard tires. This IMO highlights the biggest strength of GT5, and that's the vast improvement in physics. This car combo is extremely challenging, and soon I will tackle it with Comfort Soft. Totally worth the 1mil credits.
PS. the engine is worked in to 690bhp stock!!! Wheel spin in every gear after every bump. This car is not for beginners and not for racers without a wheel IMO, with aids all off this car is a hand full for veterans even. BUT, there isn't a more rewarding feeling than getting a corner right in this machine. (My PB is currently 7:17.xxx on Nurburgring, I'd love to hear if anyone tries it)