having had both Garmin and Magellan all I'd buy now is Garmin. Have not been all that happy with Magellan. But their customer service trying to get a couple of units to work right was great.
PS-- TimberCreek- get off that 4 wheeler more often and you might need the GPS more often. Might see some untraveled territory too
Finally even though the newest GPS have good maps systems I always carry a few other things. New set of batteries. Topo map of the area with quad ticks, and a good compass.
Jeff