This truck is Bad To The Bone!!! Rides and handles incredibly. I don’t know how you could get much better than this in a full-size SUV. I have driven 17 Denali and to be honest it pales in comparison. The transmission is spot on. The seats are incredible. As to the guy with headroom issues of the second row I’m not quite sure if there is a difference between the platinum second row seats and the limited but I am 6’6" and can absolutely sit fully upright and have about 2 inches above my head so a 6 footer should be perfectly fine. I did not climb into the third row but my daughters two friends did and said there was plenty of room and that it was comfortable. The sound system is fantastic, the sunroof is awesome. The all-wheel-drive works great and it runs like a bat out of hell. Those who are pining for a V-8 give it a try. It is very impressive. I would love to see the platinum run against the Denali and the navigator run against the Cadillac. As stated, I have driven a 17 Denali and it didn’t seem like it had the same grunt. Granted it is a friends truck so I didn’t get on it like a did the expedition today but it sure didn’t seem as strong. I am very happy!!!!!