Thanks to everyone for their replies on the RVND 7710. After one last major mistake from the RVND it has been returned to Camping World.
The very last straw was being navigated incorrectly to the Cirque Du Soleil, located at Lake Buena Vista, FL. It took us to a road, then the device wanted us to u-turn and go back 2.5 miles. In reality we were across the street from our destination where it wanted us to u-turn!
We are happy to be back to our Garmin Nuvii T-645 and will stick with it until a few years from now when they have a version 2 or 3 of the RVND. We did like the size of the RVND display. As we get older that might be a good thing.
We are West Coast people and really did not think it would work well in the mountains and trees.