Just traded my 04 GX for an 07. Very reliable vehicle. Love the new generation NAV and Bluetooth. After shopping most of the lux brands, I still think the Lexus Nav is by far the best. I ski and the old GX was a great performer in the white powder of Tahoe. The drive is very comfortable and balanced no matter what the outside road conditions are.
Navigation, Bluetooth, Great climate control system. Interior design and materials are top notch. Very comfortable seating. Lots of cargo space for those Home Depot visits.
Better gas mileage. Maybe future hybrid? Keyless entry/push button start like my GS 430. Rear door swings to the side and can be awkward when loading and unloading.