I donít have any experience with the Magellan GPS but I have used both the Rand McNally and the Garmin for RVís. To be honest, I think itís six of one half dozen of another. They both have their pluses and minuses. Buy the one you like, but know it will have mapping errors and at times screwy routes. Donít rely on any GPS for accuracy and always plan and verify the route to your destination.
Hereís some unsolicited advice, whichever GPS you buy, be sure to update the maps and download and read the manual before using it. It will make your GPS experience much better.
Bob and Joyce
2013 CC Silverback 29RL
2010 Ford F250 XL Crew Cab 6.4 liter diesel
ATU Local 788