I love mine too.
I`ve got just over 10k on her and starting to loosen up really well now, much nicer than when the engine was brand new. I`ve heard in the past that it takes 20k for it to loosen up properly anyway, so you could be getting it just as its hitting its prime?
You`ll prolly get another few GTIers telling you to get one instead of a GTD, and for 8k miles a year, I can see why, I dont think that diesels are supposed to be really worth the money unless you do more than 12k pa, but I really dont mind diesels anyhoo.