I just recently started geocaching so take my 2cents worth with a grain of salt. I just purchased a Magellan explorist 600 this is a fairly expensive unit but i wanted the ability to expand the memory for larger detailed base maps and topo, that way i can navigate on street maps getting there and topo once your in the woods. I went caching for the first time this weekend and used the electronic compass to do the gross navigation to the area of the cache and then the detailed location screen to zero in on the cache. the Magellans set pointer to track your goto point on the compass which allows you to follow a trail or easier route until the the cache is right next to you which can “somtimes” eliminate some bushwacking. Enjoy you’ll have a great time whatever unit you choose.