Wow - thats some big miles bookwyse!
Thanks for the feedback guys.
Basically it's down to the following 3 cars to go and test drive:
BMW 330d
Audi 2.5 V6 TDi Quattro
Vauxhall Vectra 3.0 V6 CDTi
First thing that will happen to whichever one I buy will be a remap
It'll be a daily hack and do some towing work next year perhaps