@Nabs
Why are you wasting your time brother. Here you're just getting everyone's wishlists.
Define your needs. Why do you really want to buy SUV? What is must for you and what you can compromise over? State these and only then someone will be able to give you appropriate answer.
One says X5, one says Cayenne, one says Q7... Do you want to spend your money according to other's wish? 
My suggestion to you is that out of Q7 and RR read various reviews and see which one has better rating. Then it will be easier for you to decide. 
No Offense, just trying to show you the way forward.
Regards,