I have a Rand McNally GoodSam RV GPS that I purchased at Camping World.
I love the interface with the search options especially for RV parks. Since we use military RV parks, the RandMcNally is the only one I've found with those separated out, and a complete database.
My best RV friend used the Magellan RV GPS. He loves that interface, which I don't.
The best GPS for traffic alerts is a Garmin with lifetime traffic and maps.
The older Garmin Nuvi we have is a pain to update because the map database is one huge file. The Rand update is a much smaller map update file rather than an entire map replacement like the Garmin.
However, no GPS is perfect. You still need to plan, and be aware of your route, watch road signs and drive with a heads up attitude.
One issue I've found with all GPS came a couple years ago when I was on a beta team for a manufacturer.
All the GPS companies get the same data from the state highway departments to setup their systems. One factor each company uses in determining if a road is suitable for big trucks and big RVs is the speed limit assigned to the road.
In Texas we have two lane, 9 foot wide lanes, roads with no shoulders in many counties with 65 or 70 mph speed limits. We have similar roads with two foot wide shoulders with 75 mph speed limits.
Many folks would consider that unsuitable for an RV - I've seen complaints about how bad a Garmin/ Rand/ Magellan GPS is for RVs for sending someone down those roads on this forum.
No GPS is better than the base data programmed into the unit.
Another problem with RV GPS units I see on these forums is that a lot of people do not take the time to learn the options and how to best use the unit. A GPS is a tool, and it takes time and practice to learn how to use the tool best.
But ALWAYS remember the GPS is advisory. The driver has to be the ultimate decision maker.
More than once, I've pulled over and looked at a map - rather than blindly follow a GPS if it wanted to take me somewhere I wasn't sure about.
