After much research, I have ordered the delorme PN-40 and am hoping for the best (might even arrive today from Amazon).
We have been using the Magellan Explorist 500 with good geocaching luck, but this unit is getting old and the rubber boot on toggle button in the middle is cracked, so now is not very water resistant. This unit has also mysteriously dropped POIs from memory, which can be frustrating, and now has a flaw in the display screen (very small defect in the middle of the screen, that does not affect the display). This will be the "backup" unit when we start using the PN-40 (as discussed in other's posts).
