 This is my first BMW.  I compared it with '09 Acura MDX, '09 Lexus GX470 and '09 Infiniti FX50.  I found myself coming to BMW X5 after test driving all the other SUVs in its class.  I loved the fact that BMW covers all maintenance for four years which the others do not.  This SUV has everything looks, speed, wow factor.  I love the iPod integration, navigation is very easy to use, I love asking for options in any menu and then I know exactly what to say to get anything done via Voice commands.  The fuel economy could be better but if you can spend $$$ for the BMW then gas is not a big deal for you.  I love driving my Ultimate Driving Machine it drives like a dream!