I have a Garmin eTrex, the bottom of the line model, and I love it. I bought my dad the eTrex Venture lat year, and I like the additional features it has over mine, like the ability to pan on the map screen. It is free to use and is very accurate in telling you how fast you are going. You can log your trail as you go explore somewhere, and then use it to "backtrack" and it will lead you out the way you came in. I have some mapping software as well (TOPO), and that is cool to upload saved tracks to your comp. and see them on an actual USGS topographical map. It is one of the funnest toys I have.