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