As I bought an R56 that was from the showroom obviously I never specced the car, so it came without the satnav option, so I had a
JCW kit fitted - but however if I were in the postion of speccing an R56 I would choose the satnav as the dash does look better and I would still have the bodykit.
So IMO - go for both!! But saying that you could buy and Tomtom and the money saved buy some other goodies for the new car!!