I use a Garmin Rino 120 as my GPS for orienteering, geocache, and general backcountry navigation.  I do not use the GPS as my primary navigation tool, but as a backup and confirmation to a map and compass.  I have been orienteering since 1979 in a variety of terrain and different countries and prefer the "old school" approach.  I do use a GPS when I am within 50 feet of a Geocache to navigate to within a few feet of the 8 digit Universal Transverse Mercator (UTM) grid coordinate provided in the instructions.  Geocache is an excellent method to hone your navigational expertise for adventure racing--especially if you use the GPS as only a confirmation tool vice your primary navigational instrument.

Many sophisticated wrist-top computers or handheld devices, combine with the PC software developed to give more graphical representation of your performance, and can be shared with various Internet communities [Geocache, orienteering, etc..], where you can download your routes and share information with other like-minded people from around the world.