Congrats on the delivery of your GX.Pickup my OT+ yesterday (incognito over black). Definitely a head turner. It was at Long Beach for approx. 4 weeks but once it got released, it was here fast. There were 5 other GX550 ready for pick up in the delivery bays yesterday at west side lexus in Houston.
Pros - love the seating position and visibility, head room is great. Seats are comfy and space is good for my family of 3. Love the trunk space. Incognito is gorgeous. Remote start, brightness of heads up display and massage seats are good.
Cons - (for me...relative coming from an x7). The MPG thus far is terrible and I am sure that will change over time and trips. There is some lag when accelerating but I am not trying to push it too fast just yet. The ride is not as smooth and controlled as the x7 (which had both air suspension and rear wheel steering).. I have owned LC200's and LC100 and FJ so I know the BOF will take some adjusting.
Best of luck out there.