I am a new owner of a 2006 GX470 with 101k on it. Been a great car so far, did have my first experience with the rear air suspension this week though. Damage cause by the tire shop resulted in a popped bag. Bag replaced but that system has it's own demons. I just ordered coil spring conversion from Metal Tech so if I have anymore issues I can just swap it right out and be on the way. Looking forward to many years of driving this GX.