I just read an article in a recent Road and Track(I think) on the SMG in the Z4. Basically, they loved the car but totally trashed the tranny! Often they had to restart the engine, to reboot the tranny, just to get it in gear. Unless and until they get that mess straightened out I know I won't touch it. I'm a manual guy but I concede they can be a hassle in an everyday hectic commute.
SEMPER FI 2/3 Comm
Founder of the Four Pedal Club