Speccing options is all so very personal - and budget dependent.
I'd love to have a fully integrated sat-nav but I can't really afford, I'd love to have the PP, but I can't spec it, I'd love to have the Orxy paint job but it's out of the budget-range that I set myself (and nuts money).
I think it is easy to get sucked into adding loads of options through peer pressure and 'journo' reviews. Gryzor's post highlights this point perfectly.
On the whole I've stuck to my guns and kept my car spec pretty basic. I only added the keyless entry system.
The thing is the new GTD/GTI is so well specced from the Mk6 it's got everything I want. The main thing I really, really wanted was the Bi-Xenon headlights and the ADC but both come as standard, yay! I also badly wanted DAB and phone prep and it has these too. So, I didn't feel the need to spec many expensive options because the UK spec cars are pretty well loaded especially compared to the A Class and BWM 1 Series.