I have a Rand McNally 7710 GPS and liked it when it worked I purchased a new Class C motorhome with and over cab. When I hooked up my Gps it worked for a while and then all of a sudden it started to freeze up and not show were I was. I called Rand McNally and they said I needed and outside antenna but the did not have one available. I proceeded to find one and had it installed. This winter I escaped to the southwest for the winter. Had problems with it freezing up, getting hot and not charging. I would hook it up to the computer do updates and diagnostic's and it would find errors and correct them. Then it would work for a mile or tow and do the same thing over again. I was able to borrow a little Garmin car gps and it worked fine. Rand McNally would not do anything about it said I would have to buy an new one. I had only had this one since 1/2012 and used only 4 months.
I am in the process of looking for a new GPS and was wondering if anyone had any experience with the New Model of Rand McNally RVND 7725 or the Magellan RoadMate RV9145-LM. Hope someone can give me some info on them, can't afford to be buying a GPS every other year.