If you use the search function at the top of the page you'll find many threads on this GPS unit. I personally use a Garmin Nuvi with lifetime maps and traffic, it serves me well. I didn't see the need or extra expense of a dedicated RV GPS. I've seen enough errors on various GPS and online maps that I'd never fully rely on a GPS to preserve my rooftop accessories. (low clearance function) I try to plan where I'm going, study online and road atlas resources, then use the GPS for a reminder but have a PostIt note on dash with route #. I find trying to rely only on the GPS doesn't give me a good 'feel' for where I am in the big picture as I travel.
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI