I skipped the B7 and went for the B8 because I couldn't really see much of a difference between the B6 and B7. The B8 for me was a great move, particularly the avant because it is so much more practical with the boys and their stuff.
I had the standard B6 sport with only electric windows in the back as an extra and again my B8 is the standard S-Line with parking sensors as an extra. But with the B6, I wished I had chosen a whole load more optional extras, whereas the B8 I am happy with everything. The B8 has so much more to offer as standard, although I do wish I went for the Quattro. On the wet roads, the car finds it really difficult to plant its power. This might be down to tyre choice, but I think the Quattro would be more suited to this type of engine. But subtle things like the sound system volume reducing when you put the car in reverse allowing you to hear the parking sensor system just makes me feel as if Audi have really thought about things.
The 2.0T isn't mind blowingly fast, but I do find it fun, particularly after moving from the 160ps 1.8T. I always felt slightly threatened by most diesels with my 1.8T, but feel a lot more confident with the 2.0T. Yesterday I left the roundabout and entered a dual carriageway and as I started to overtake a Passat 2.0TDI 4 Motion, I noticed I had to work a bit harder to overtake him. He obviously thought it was a challenge, but I left him sucking on petrol fumes. I slowed to allow a car further up ahead to overtake another car, so the Passat caught up with me. He obviously wanted another pop, but gave up after he sucked on my fumes for a second time.
I took my colleage out a while ago, he has the Golf GTI 2.0T, and even he was really suprised by the performance, considering it was a bus compared to his. He felt it was just as quick. On my usual 125 mile run carrying the famiily and a boot full of stuff, I get around 39mpg. But if I take it easy, I have reached as much as 44mpg which is really good for a petrol engine.
Hope this helps. but is it worth waiting to see what 2012 brings?