I decided on the 660 rather than the 770, it was delivered to my office today. I put my home address in and it got me home without any problems I had it set on car mode. So far I'm pleased and like the size, the one I have been using is a 5". My first Garmin was bulky and cost me $800.00,that was 11 years ago just after my wife passed away. She was my navigator and without her I was lost in more ways than one, it served me well and I've had two other Garmin since then. This is #4.
#3 is in my Jag, I use it as a speedometer since the one in the Jag quit along with the odometer, cruise control and not sure what else. Anyone like to buy a nice Jag.