> Anyone know of a place where I can find a list of GPS units out there, > that'd be a great help.
Here's a list I compiled real quick from the leading vendors websites. No doubt there are vendors I didn't list and/or models I've omitted, but it should give you a start.
Garmin eMap Garmin eTrex Garmin eTrex Summit Garmin GPS 12 Garmin GPS 12 XL Garmin GPS 12CX Garmin GPS 12MAP Garmin GPS II Plus Garmin GPS III Plus Garmin GPS 48 Garmin Navtalk - GPS / Phone Garmin GPSMAP 175