Best GPS for RV

For what it is worth I bought a RM7710 last Jan. and I have hated it every day I have used it.....trying to down load poi's into it are a pita. Plus takes hours and hours to do. It puts everything in alphabetical order. When I am looking for a Texaco gas station you must schroll thru all the poi's just to find it....No way to put them in as categories, Plus when you email RM with a question or problem I have yet to receive a response. The first time I called customer service I knew more about the unit than he did and he was going to have a supervisor call me back. That call never came. If I could return it to Camping World and get another garmin I would do it in a heart beat........