De Lorme Topo 8 and PN 40. Had most of the trails we ran in Moab. Did not have Poison Spider. Plan your routes on the computer, transfer the data or not. Base data is great and you can download USGS 7.5 minute maps onto removable memory. You can use the PN40 as an antenna and hook to computer with USB. Now you have a 15 inch screen to look at. Letters 2 inches tall. Works great for 56 year old eyes. Picks up all satellites while inside the motorhome. Best unit I have had on land. I won't buy another Garmin or Magellan.
"Old age and treachery will overcome youth and skill", Bob Arnett