We went for the 3.0 sport and are very happy. We have heard complaints that the sport rides too stiff and bucks, all I can say is it the most fun I have ever had with an SUV. I have owned two Lexus RX 300's which honestly drive like a minivan compared to the X3. The X3 has a great sporty interior which in my book is of better quality and and design than the new Lexus RX 330 (which was the other car we were considering). With the deal we got from BMW we received much more car for our money than with a Lexus.
Sport Package, Ride, Intereor space, Fantastic design and an engine that performs. Feature by feature a better car for the money compared to the Lexus RX 330 and that's not counting the free BMW service for 50,000 miles