I'm helping my parents research new cars. They're looking to buy a full-sized luxury SUV. The top prospect right now is the Infiniti QX56. They've decided against the Cadillac Escalade as it is fairly aged, and the Lincoln Navigator is a bit more money than they want to pay. We know the QX56 is basically a slightly modified Nissan Armada, but it seems to have a lot of nice features, and cheaper than both the Escalade and Navigator. Is there anyone here with prior knowledge of the vehicle have any positive or negative comments about the QX56? I've looked around the net, havent come up with too much for or agaist it. Any suggestions for other full-sized SUV's are appreciated too.