Just picked mine up, but I did a lot of research prior to purchase. Just to add to what others have said, the ride is very nice. It rides much better than my (ex) 4WD Lincoln Navigator. About off-road - that is one of the main reasons I bought the vehicle. I live at 8000 ft in the mountains of N. New Mexico and contend with snow and muddy gravel roads. I needed something capable of handling tough terrain. Scoobies are very popular up here because of their off road capabilities. The Tribeca does not fail to live up to those standards.
Plush, but handled nicely on the mountain roads coming home from Durango, where I picked it up. None of the sway felt in the Navigator is present on curves. It is nice and tight.
Time will tell, but at this point, I am extremely happy with my choice.
Couple of nice write-ups by an owner here