Well, the GX550 seems cramped compared to 4Runner. Things have popped up I did not notice on the short test drive.
The second row captain seats do not move. Cramped. Hardly any storage up front to speak of. Doesn't even have a space for sunglasses. The cool box center console is laughably small and useless. Gas milage is bad (which is OK) but the darn gas tank is tiny and I'm refilling every 250/300 miles. Tahoe with diesel would become the family trip hauler, currently that is a Lexus TX350. Nothing on there like the Chevy Cruise which looks nice. I do have a boat (24 Pair Custom) and the Tahoe would probably handle better. The Mark Levinson sound system SUCKS! The top of the interior doors are pointed and extremely uncomfortable to rest my arm, I have a bean bag I put in place now to help.
I'm just nervous to get into something that might give me issues. I won't keep anything more than 5/6 years and will always buy the extended warranty.