Wolfsburg
I have a wolfsburg, but I am half a modder [at least I try to be]. The wolfsburg has some exotic appeal to it and that was the deal maker for me. All the cars I owe are sorta rare variants of cars [My old commuter was a Sentra SE-R Spec V] so this was a logical choice.
The DSG transmission is just neat. I am educated as a mechanical engineer [never worked as one tho] and this just had some interest factor.
If you haven't seen anything about it, this is a good link:
http://auto.howstuffworks.com/dual-clutch-transmission.htm
I agree that premium is the way to go with this engine. It's a pretty high compression engine [10.3:1 from below] and the turbo just adds to that argument:
http://autos.yahoo.com/2008_volkswagen_jetta_sedan_wolfsburg_edition-specs/?p=eng
That being said if the computer is anything like that of a Ford, then it has 'microphones' of sorts listening for pings. As soon as it hears one, it pulls timing like it's going out of style. Pulling timing hurts your gas milage, reduced horsepower, and all sorts of poor things so why do it?
I read something about premium versus regular awhile ago. 15 years ago gas was prolly around a buck 50 and premium was about 20 cents more. Today gas is around 4 and premium is still 20 cents more, so the rate of change wasn't consistant and premium actually is more well priced.
I agree with something I read while hunting for the compression ratio. It's like driving some type of excitable dog

I didn't mind the SE at all, but the wolfsburg is a little more fun.