I've driven several PDKs and owned a DSG in a GTI. The PDK is superior to the DSG but for the price difference I expect that. The DSG is still pretty damn good and way better then any traditional automatic that I have driven. When shoping the GTI I wanted a stick but liked the DSG enough from the test drive that I went for it just to give it a try. After I got over the novelty I really wished I had got the stick. I just got bored with the DSG due to the lack of engagement.
My transmission choices are in this order:
1. Stick shift
2. Dual clutch
3. Traditional automatic
4. CVT