so far I'm more than satisfied with the 760. has a few quircks but better than many others I've tried.
With our new 2015 denali, I favor the onstar directions. a quick call and route is downloaded, even a rv friendly route.
And the wireless backup camera:
1) is the only one I've seen that really works as a wireless unit. they got it right and let you mount the transmitter on the trailer tongue
2) the camera has a good wide angle view w/o distortion
3) you can turn on and off the guidance lines
4) you can calibrate the guidance lines to your setup
5) works well at night
6) easy to wire as either a backup camera or a always on rear view camera on the back of the trailer.
my opinion, the remote camera optiom makes it the only aftermarket gps to buy.