I just got the Sport 3.0, sort of by accident. I wanted a silver/gray leather. Wanted to do the deal last Friday. Only color combo was this one and the dealer dropped $1500. I think the ride is similar to most regular BMW's. I had a 352i. I had a Range Rover County and that was a marshmellow, somewhat unsettling to drive. Most SUV's seem "tippy" to me. This one definitely feels good. The 4.0 will be a little quicker, ride should be the same. Very little weight difference. Where are you driving? I wanted a tank to handle I95 and the crazies between Ft. Lauderdale and Miami. I can't wait 'til Tuesday to start tailgating! Tom