Buddy of mine has a Modena 360 with the F1 shift. The car is absolutely brutal in a straight line due to the computerized gear box -- I've never felt such perfectly timed, fast, hard shifts before. I don't think that people can keep up to the computers on that front. Car handles amazingly well as you might expect and is great at speed. On the other hand, I actually find they way they sound awfully irritating - a very expensive fart pipe.
No Z06 for comparison.
Now if you want an interesting comparison, you should ask Charley to compare his Silver Arrow to just about anything he's driven before...