The durability of the DSG is also of interest to me. I think it's been around about 6 years, which is certainly sufficient to get some idea of a number of cars that have gone 100K.....150K, probably not so many. Trouble is, I don't know who -besides VW- is going to have the stats on DSG durability. And I don't know how one would get the info out of them.
If I get a DSG, I will plan on doing my own service. It's not that involved, and a savings of more than half can be realized. Using a search will reveal threads (and videos) on DIY DSG service.