GPSherper here...
Alittle history-
I bought an etrex (old yeller) in 1998 for use on a trip to wyoming for some field work with amphibians, heard about geocaching around that time and joined the site. Never got a chance to look for a cache. Yeller served me quite well as a spedometer for my bike, hiking buddy, canoe-ing pal, etc. It had truly turned me into a techno geek...
In 2000, I upgraded to the Vista, I was hooked on the mapping ability and the storage capacity. The silver vista traveled to wyoming, kauai, Costa rica, North Woods of maine, the everglades. I take it with on business trips to amuse myself and my work buddies. Before jet blue was showing us where we were in the sky, i was logging air speed, alititude and location on the vista (i know, i know, bad idea!). I rejoined this site under a new name (long since forgot my original handle) in 2005 and lurked the forums. I attempted a near by cache but it was not to be found.
I find the info on the hardware forum instrumental in my upgrading to a GPSMAP 60Csx, using NiMH batteries and deciding on mapping software.
So far I think the CSX is sweet, I'm flying to Puerto Rico this friday to test it out on El Yunque.
I don't have much to add to most threads but when something stirkes me, I plan to participate.
Till then, I shall lurk...