Thanks for all of the advice and feedback!
I went for the silver car in the end and picked it up on Monday. Having been in MPV / family-wagon exodus for the last decade, to be back in a sporty car is a revelation and am really pleased with it. Car is in great condition inside and out and feels amazingly fresh for an 11 year old car with 79K on the clock.
On the run back around the M25 temperature gauge was reading sub-70 and only hitting 90 in slower traffic so suspected a faulty / stuck thermostat. Car was booked into local VW specialist to get DV, PCV and cam follower checked / replaced so was all replaced together.
Interestingly, the DV was already a Rev. G spec and looked like it was in good condition (no tears etc.) but afterwards car felt a bit livelier? Would you potentially still be losing boost even if the DV wasn't torn?
Anyway, looking forward to many more miles and potentially a stage 1 remap in the spring.
Wife is already looking for any excuse to borrow what is supposed to be my work / commute car so seems I'm not the only one who is happy with the new purchase!