GPS for travel with a FW

We have the Garmin RV 760 unit. This one was purchased when we had a 40 foot motorhome. It has the RV and Auto feature that in my opinion you really need. When we purchased our new fiver I put in the height, length, weight into the RV setting. Updates are free and it watches out for low overpasses and give you a route that will accommodate the length as well. In the auto selection it functions as a normal GPS. The GPS in our truck works great but does not have the RV function.