I have been in a similar situation to giorgio. I paid £1460 for my anni for a year, but got quoted about £40 more for a twin turbo supra!
Thought they'd missed a '0' off the end!
It has to be said I am still surprised you got quoted that price on a GTi. With a years NCB, Quinn wouldnt insure me on any GTi (looked at a 306 GTi-6 & Anni).
My first car at 17 was a 1.1 Pug 106. This still set me back £1499 on my own policy with no NCB!
If thats the price you got though well done! Nice to hear someone has had something good come from an insurer for a change
Jon