I just ordered a 5.0 with the sport package and my understanding is that What I really paid for was the anthracite headliner, wheel arches, steering and 20" wheels....I had them check off "sports suspension delete" as I did not want a stiff ride..Hopefully the comfort seats will counter the harsher ride of the 20"...if not Ill go to non RFT....may sound silly to some but in black the arches blend in and its wayyy cheaper than getting the M package....I have 2 kids so dont take corners at 120 mph+ i.e. where I would need the adaptive drive suspension....as far as highway driving...Im looking forward to the 5.0....now all I need is clarification as to wether BMW will allow me to get the X-6 perfromance package/tune they have at the dealerships from june for the X-5 as it is a leased car.....