The question you have to ask, is will you be prepared to pay for a replacement if it fails. I for one would not be, I would be looking for a warranty on the car whatever the age. Given the amount of reported DSG problems across the VAG range (all brands and models, all years) It would be a risk I for one would not be happy to take without warranty.
Just my opinion, great whilst in warranty, not so outside warranty.
At least with a manual if the clutch went, I would be happy to get under it and sort it myself. Agreed that is not the case with everyone.
I don't believe you can DIY the mech unit on the DSG.
Manual is more suited to both my driving and my DIY maintenance capabilities, and is known and well established technology in OEM and aftermarket circles.