1 question do you want to showoff then get the rr,if you do alot of work get the disco,but be warned the wife refuses to drive her merc and its now a fight to get the keys.
i have had 2 disco before and should have kept the td5 hse,but now love my rr 2,5hse,the disco is lighter and performs a little bit better,the rr needs a bit of wellie to get her moving.
you wont go wrong with either just take your time in choosing the right 1
give us a shout if you need more details and info. john