Best GPS for RV

I replaced my Garmin Nuvi 1450 with the RAnd mcnally 7710 so I could have the ability to program for height restrictions... The 7710 works O.K., but during first 4 months travelling, I have decided I prefer the Garmin overall. The screen resolution is better on the Garmin, and it seems to have more of the POI's that I use. It seems more user friendly as well. I have begun to use the Rand McNally when towing, but stash it and pull out the Garmin for everything else once the 5vr is parked. I've yet to need the height feature, so I may just pitch the Rand and stick with the Garmin.