Think I know what you are saying about DSG. We P/X'd a Fiesta ST for a Polo GTI DSG 3 years ago.
After the fun of the ST, the magic seemed to be missing with the DSG, it felt strange and you almost feel detached driving it. After a few weeks of owning it though, I did start to enjoy it and you get used to the characteristics of the box, although as you said yourself, it can change down or back up maybe slightly earlier than you want it to.
One thing that still frustrates me even now with it are hills. Seems to select too low a gear which prompts me to override it, again having got used to it, I tend to override it in anticipation of knowing what it is going to do.
I am of course referring to a 7 speed DSG in the Polo, but I am sure the 6 speed in the Golf must have similar characteristics. I do own a manual gearbox Scirocco also, when I get back into the 'Roc (which I love driving), it can almost feel cumbersome having to press the clutch pedal after the DSG!
If - I do buy a Golf GTI in the future though, I am pretty certain it will be a DSG.