[Retired Copper]

I suppose all of them have their quirks. Garmin has always been my personal favorite but haven`t used the 660 or 770 but they are probably what I would look at if in the market. I had got a great deal on a Magellan RV gps; the newest one, and I like it. It has a big screen and I type in my overall height and length and it works pretty good. I can start typing in a campground and if it is a Good Sam it will pop up right away. It shows truck stops on the up coming exit along with rest areas, dump stations, and campgrounds. I imagine so do the Garmins. ON long trips I use google maps and print out the map also and I always carry a road atlas. I sure others will chime in< I just haven`t had the chance to use other brands. From time to time also use google maps on the cell phone to compare routes. On last outing the traffic alert came over the gps and warned a delay up ahead so I just decided it was a good time to fuel up and take a little break.