Went from a 4.8i to a GL350 and I put on the fender flares and 22" AMG style rims. There are trade offs between the X5 and GL but it depends what your after. I needed the room and honestly, the 3rd row in a GL is a real 3rd row for adults. On top of that, the diesel gives awesome mileage and actually holds its value better than the 450/550 versions. The sportiness of the X5 is a little more favourable especially if you want to wip it around the corner. Keep in mind, these GLs are like 7000 lb vehicles so heavy is an understatement. The NAV setup is a little old but otherwise, no complaints so far.

__________________
SOLD - 08 X5 (Titanium Silver w/Black Nevada with all options).