You're on these boards, so you see all the threads with SMGII/III and DCT issues. The DSG is a very similar transmission. In the long run, the MT will cost less to fix(if you're skilled enough, you can even do a clutch job in your garage) but the DSG is going to take a professional that has been trained on those specific trannys. Plus, nothing beats a three pedal car.
Not putting miles on your Ferrari is like not f*cking your girlfriend so she'll be more desirable to her next boyfriend.