Advantages of DCT(not in any particular order, except the first):
- DCT is THE single option that will make the car have better performance, straights and twisties (it is very close to a 6MT with 440 hp and 320 ft lb torque)
- DCT is customizeable through software (perhaps both BMW and other)
- Manual modes via paddles and stick and automatic mode for traffic jams, comfort or inexperienced drivers
- DCT allows one to focus on more cerebral and challenging aspects of performance driving
- DCT provides better fuel economy
- Launch control should be fun, fast and consistent
- No "money shifts" with DCT
- DCT is race technology for the road and BMW claims it is designed for race level "abuse"
- Rev matched downshifts
- The inherently smooth shifts with DCT may provide less shock and better wear of some transmission components
- Clutch pedals are so 1950s
Advantages of MT:
- Simplicity and perhaps reliability
- False pride in your rowing abilities enabled by MT