What format are the maps: jpeg, pict, tiff, other proprietary?
How do you download the maps: click and save? Or do you need proprietary software?
How reasonable would it be to use Topo USA on my PC to import and export gpx files that will be on my PC and use the subscription to access very good maps? I will use other software and another GPS receiver to take care of my route and track log data collection. I don't want to buy the PN-40 at this time; maybe a larger screen PN-xx later. So I'm proposing to keep my current GPS receivers (not Delorme) but use the Delorme software for on-the-computer planning and review. I do not auto route, computer or receiver.