I was intially wanting to go with the CommandCenter for camera display.  HOWEVER, video will only work if you have the "touch screen" CommandCenter.  In other words if you have the regular non-touch CommandCenter display then don't bother buying the camera harness that plugs in below the rear window.  My John Deere dealer tried to sell me one but once again I did more research than they did and knew it was impossible with this tractor since it was non-touch screen.  Sigh.

For more clarification look at the link to the sales guide above and read carefully, especially at the very end.  There are two types of Command Centers.  The touch screen option is the only one to support video in.

And I am learning way too much about all this because I'm still an AutoFarm A5 guy and don't even own a GS system.