This question comes down to preference, the best thing for you to do is test drive both and decide which you like better. Personally, when it comes to the GTI I don't regret choosing DSG over manual. But, there is still a part of me that misses manual, I just don't want it in a GTI. At some point in the future I'll probably have a manual 370z with rev match. I see that transmission as the best of both worlds more so than a dual clutch is. Auto rev match brings standard transmissions into the digital age without sacrificing any fun or engagement. If not a 370z I'll have a manual Miata or Fiesta ST (only option anyway). Those are the type of cars that make manual fun and a must-have. IMO, the DSG fits the GTI's personality better than manual. But, again it's all preference.