Well
first I must declare I am in the industry but
X5 would be my choice preferably the 3.0sd Twin Turbo its the same engine as 535D goes like stink returns 28mpg handles like a sports saloon (really) its quiet roomy and best of all holds it money and my Labrador loves it too :wink:
RR's are great looking well appointed but are a bit roly poly IMHO but a friend swears by the new V8 Tdi and they look very British Beef
If your going muddy its the RR if you want speed and handling its the X5 SD
A nice choice to have 8)