I drove both models before buying an automatic. I'm happy with not shifting and I think it's fast as hell. Sometimes it shifts 500-1000 rpm over redline, seems a little aggressive.
I've had alot of sports cars and race motorcycles, and to be honest can't believe that I ended up getting an automatic but it is the best in my opinion for performance. Combine the performance with the Incredible handling and I'll keep both hands on the wheel and let the car worry about when to shift while I smash the gas pedal down for as hard as I can.
cya,
Eddy