I have the cinturato on mine now and will be switching to the Ventus V12 by Wednesday, albeit on 19" rims instead of 17". I'll post something with the differences, though, I had the V12's on my 370z a while back and they were sublime.
2012 Nissan Altima 2.5s
2008 Range Rover Sport Supercharged
Previous BMWs (2008 135i, 2012 328i)