Last week I bought a Magellan eXplorist 600 because I didn't want to expose my PPC to the outdoors anymore. But till then, this combination:
* GSAK (for waypoint management on PC)
* GPS Tuner (for navigation wt PPC)
* GPX Sonar (for paperless caching - view GC.com cachepages and reveal hints, add field notes, waypoint projection)
worked perfectly!