Philip Foglar said:
Back to the E90 M3, I stand by what I said earlier, but the newer DCT technology seems to be considerably more sound, as is the rest of the drivetrain I gather. E46 M3 CSL was intended as an all out track car, doesn't even have a radio or AC as a measure to keep weight down!
The CSL was intended to be a more of a track toy and was not very comfortable to drive as a daily driver (even with an aircon :=)

. The SMG transmission was better than SMG 1 but still a little uncomfortable as a daily driver. Manual vs. DCT depends on your priorities.
Issues with DCT:
1. Lightning fast gear changes
2. Passive driving in stop start traffic is a bonus
3. How comfortable are you using launch control
4. The blip is cool (as I have said many times :rollsmile
Issues with manual:
1. More fun on the track
2. Launching is easier if you fancy a bit of a dice at the lights
3. More involvement for the purists
4. Probably cheaper to maintain when out of motorplan (depending on how kind you have been to the gearbox and clutch)