|My Vintage Garmin NUVI|
|7 Inch Garmin|
In the handicap accessible van I've got a nifty Rand McNally one that has a 7-inch screen and seems to work well, but unlike the Garmins I am familiar with, I am unsure if it can be upgraded. POI's (Points of interest) are a nice thing to have as well. They help you find restaurants, fuel, lodging, etc. I know on my Garmins I can add my own databases of POIs. I have one that gives me all the low clearances on the routes I travel and beyond. Just a little bit of searching online for something that interests you will garner many results. Try it, you'll like it.
I did toy with the idea of using an old android tablet with a 10.4-inch screen as a navigation device, but decided a purpose-built system would be better. I know Google Maps is quite amazing, but what if you have no access to the internet AND forgot to download the area for offline use. There are also a few models designed for RV use, but with a premium over and above the cost of a "regular" model. I can add POIs to mimic most of the RV specific features anyway. Of course, there are other brands (Magellan, TomTom, etc.) that work fine too. The choice, as always, is yours.
Be Seeing You...Down The Road,
Rich "The Wanderman"