I went from a RRS with the awesome TDV8 to a 2.7 D4 and not really been to disappointed with the 2.7. It's still a smooth and relatively powerfull unit. I have a set of 17s with KM2s as spares and saved 10 grand which I am now using to get a bar and other stuff for the car.
I have never found myself wishing for more power. Maybe if I towed more often I might!
As far as dealers go the one that I use has been pretty good to deal with but hopeless on trade in prices. Sold my previous D3 and RRS privately.

