Replaced 2006 QX56 with 2010. Love the improvement in electronics. To us it is perfect in terms of size - MB, BMW and Audi were smaller; we often sit 5-7 people plus all the stuff for the trips in addition to getting kids to the games w all their gear. Luxury/ride is the same as with MB w extra space and w/o extra $$$ for all options. Only downside - No diesel. Overall - excellent buy and no complaints.
New navigation w touch screen/Voice commands, ride,comfort, look, service.