I haven't driven either yet. But unless something completely turns me off with the 6 speed, that's the way I'm going.
I agree with Marc on the Autostick. I have it in my Sebring and it is just like using 1,2,3 rather than D. If I'm going with the sports car, I'm going all the way. I used to drive in Boston traffic every day with my old 5 speed Blazer and I didn't mind so it shouldn't be an issue since I seldom drive in a lot of traffic now.
But it is a matter of personal preference.