PN-40
You too can fall in love.
Could one use a phone with GPS for this?
I wouldn't know, but since this (Car) model is on sale, anyway, might be worth checking out:
http://www.amazon.com/Garmin-4-3-Inc...tag=slickdeals
iPhone with the Geocaching app can't be beat.
Technically. However I woudn't use it backroads or in the woods as most cell phone type GPS is not true GPS. Instead they rely on triangulating cell phone tower positions. So if you loose the signal you don't have any GPS. Also they tend not to be as accurate.