I am looking at the 2011 X5, Specifically a 5.0i with Sport Activity.
I have not been able to drive one with Active Steering. Does it really make a difference? I noticed steering was very firm without it at low speeds. What about road feel at speed? What about twisty roads taken at speed?

Also I'm considering Adaptive Drive. I drove an M Sport with it and liked the ride/handling balance but can't say I remember much difference in Sport mode. Should there be?