Looking to buy BMW X5 3.0

Looking at a couple of X5's 90+ miles. What major issues should I be looking for? Service, mileage, etc.

http://washingtondc.craigslist.org/n...741639843.html

http://washingtondc.craigslist.org/n...746651355.html

http://washingtondc.craigslist.org/n...733628415.html

I wouldn't buy one with NAV b/c its not very good at all. my transmission died at 100k and had to be replaced (although probably could have been re-built). pixels on the instrument cluster seem to die; common problem for e39s too. outside of the transmission, mine has been pretty solid, 140k miles and counting....

lots of good info on xoutpost.com

Bushings get trashed pretty badly in the X5.