We loved our 06 3.0tdi Quattro manual.. Only getting rid of it now we've got an S5 cab. Stunning car to drive, holds the road, power AND economy from the weasel.. Don't think you'll regret it!
in fact ours is available!
We hadn't thought of changing, but saw a stunning blue TTS on eBay . The good lady loved it, and as its her day to day chariot, decided to change.
As for the comparison , well the TT is faster, but feels a little skittish. Sure we'll get used to that. Also. Bit more road noise than the A4, but...
They are great fun, and even with Summer tyres feel secure.. I'd be interested to see just how much difference Winter tyres make.
Our 3.0tdi is up for sale, we've moved to a tts, took that out today. It obviously felt different, but again lots of fun!