Definitely personal choice. It's easy to get wowed by the DSG box on a short test drive as it is technically very good at what it does, but you might come to loathe it if you cannot forgive it when it doesn't do what you were expecting maybe twice per trip - especially if you've always had a manual and never really done DSG before.
Take a really long test drive if possible, get the hooning around from a standstill and messing around with the paddles out of your system and then try to have an hour driving it as you would every day and see if you still like it.
For me on a test drive, the paddles were a novelty I was done with in 5 minutes. I wouldn't religiously use them, you get lazy after a while because you know the car will change for you if you don't. You can't get away with that on a manual, and so you can't get lazy, nor do you begrudge having to change. The nature of the box is that it seems to be chasing mpg by changing up very early with a very light throttle, or pushing on hard and hanging onto every gear in every other situation, with not much middle ground (the other thing I don't like about it in use).
My dad loves DSG and would always spec it, I wouldn't have it if it were free.
On an R, the official 0.2s 0-62mph advantage (if you use launch control) isn't a compelling reason for me to get it on an R, but it is for many.
There's no right or wrong choice, just be sure you don't end up with the one that is wrong for you because you didn't get more than 5 mins on a test drive and all you remember was being bowled over by its in gear pace.