i did alot of research on this before i bought the oregon 450. My requirements were- big screen, memory card compatible (preferably micro sd) and the ability to load custom topos. i looked hard at the delorme pn-60w because of the ability to send satellite text messages and would have probably went with it if you could receive messages as well (2 way) but am happy with my choice. garmin is the only brand huntinggpsmaps.com supports also. i had an e-trex prior to this and knew garmin was a quality brand. the oregon was a definite upgrade though.