Welcome back, Rab. I bought my pre-facelift (and first) Avant this May with 31k on the clock. Almost the opposite spec to yours - as my priority is ride quality not handling or stance.
It's an SE with optional Xenons. I've thrown on 17" wheels instead of the 20's. It has a bright beige interior with black dash and headlining, Audi Exclusive light wood trim, matching wood & leather steering wheel and a panoramic sunroof. I understand that the previous owner had it as weekend toy/leisure vehicle for his enjoyment only - so no electric seats nor any other fancy electronic extras.
When I got the car, it even had the matching Audi Exclusive floor mats as a modest £475 extra. They were not particularly high quality and had to be replaced with something aftermarket to spruce up the interior.
Altogether a weird, A8-ish combo of engine and trim that fits my current needs almost perfectly.
I hope the fact that it is not ULEZ compliant does not come back and bite me too badly. I had put the Reg Number into the London Emissions Checker prior to purchase and it came back negative - I would not have to pay. Three months later the result had changed - I would have to pay if necessary.
