After 6 months of research, I finally decided on the 4.4 X5. I am soo happy with my decision. I really feel the X5 is the top. I was driving a 2004 Grand Cherokee, and it can not even compare, except for I can no longer go 4- wheeling on the beach. On the highway it handles just like the 530 and is quicker.
Navigation, Blue Tooth, Panoramic sunroof, rear seat recline, heated steering wheel just to name a few.
Cup holders!! They are better than the ones in my 2002 530i, at least I can fit one cup in them, but they are not that functional.