I agree with Uncle Ed
The gpssledmaps were good last season, and they have been much improved this year. I have been to the UP twice this season with a Garmin Nuvi mounted, and the maps make it possible to get around all day without ever looking at a paper map. Of course they are wrong every now and then because the trails have had to be moved, but that is true of paper also. Be sure to turn off the internal map that comes with the GPS when you need to see the trail maps.
You can get a free version, but the premium is worth every penny.