Go-Go Gadgets

Master Orienteer
The DeLorme Earthmate GPS PN-20 combines USGS data with the company's own frequently updated trail and street networks, meaning it displays routes that aren't yet on official maps. You can also load it with high-resolution satellite or aerial photos, street grids, scanned USGS topos, and NOAA nautical charts, making the waterproof, five-ounce PN-20 the most powerful backcountry GPS we've tested. Map geeks: If you live by contour lines, this is your unit. $400; delorme.com

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