im a new owner of a e46 m3. I've owned a Camaro SS before and i still like the SMG. You lose being totally connected to the tranny due to the clutch pedal missing but who cares you still get to shift the gear. The first few hours my left foot was hitting the foot rest like it was the clutch!!! So if you still want that clutch feel in between shifts you can still do the left foot action hahahaha. But to be serious it lets you focus on driving and you can keep your hands on the wheel.
-recommend that you make sure you care has the most updated software.