 So I have owned this vehicle now for 2+yrs (traded in a Cadillac Escalade); bought it used in 2014 with 28,000 miles and now have a little over 45,000 miles on it.  Thus far, love the vehicle, it handles very well, very comfortable and smooth both as driver and as a passenger.  Technology package on the vehicle is great.  Now a few of the issues that I have with the vehicle and I am comparing with my experiences with the two previous full size SUV's that I owned (2007 Yukon Denali and 2008 Cadillac Escalade) before purchasing the Infiniti QX-56 are: (1) Backup camera design is horrible.  Visibility is very terrible during the day if there is a lot of light coming into the car (very sunny day outside).  It is practically useless.  I have to look back and listen out for the parking sensors on bright sunny days.  At night time in very dark areas (no street or building lighting around), there is also very limited visibility using the backup camera (insufficient lighting).  I never had these problems with the backup camera with the Yukon Denali and Cadillac Escalade.  I had zero visibility issues both during the day and night regardless of how bright or dark it was.  In this area, GM has Infiniti beat by a long shot.  (2) Drivers and passenger side view mirrors should be able to fold in and out after the vehicle is turned off before the vehicle doors are open.  The battery should still hold a charge for about between 30 to 60 seconds.  If you forget to pull them in before turning off the vehicle, you have to start the car back up or turn on the ignition (hit the start button without stepping on the brakes).  Another feature I liked with the GM trucks I owned.  (3) Remote start should come standard with this vehicle since this is their flagship SUV.  Again, also another feature that I enjoyed with the GM trucks I owned.  (4) This is not really a big deal but the rear panel should be able to open and close in cases where you need to put something long (ladder) back there. (5) This too not really a big deal, but the third row seating should be more comfortable (should be able to fit an adult of average height and weight).  The Lincoln Navigator's (never owned but test drove and ridden in one quite a bit) third row seat is the best; there is literally no difference in comfort between the 2nd and 3rd row seats.