I'm still in the dark ages. I don't have GPS when I go into the woods. I still go with maps, compass and old fashion methods like the location of the sun. My wife was considering getting me a GPS for Christmas, but was wondering how good are they in the woods. Are they good, and are they worth it? What kind is good, and how much do you need to spend for a good one? Do they work everywhere, or do they have dead spots?