Garmin GPSMAP 640
Waterproof and equipped with “both road and marine maps and modes,” this system can pull “double duty” on a car or a boat.
Price: $1,200; Contact: Garmin.com
Source: Popular  Mechanics

Magellan Triton 2000
This “Swiss Army knife of the GPS world” has a flashlight, a two-megapixel camera, and a “geotagging voice recorder.”
Price: $500; Contact: Magellangps.com
Source: Outside

eTrex Venture HC
Outfitted for the outdoors, this waterproof device shows off-road locations and includes a hunting and fishing calendar as well as sun and moon cycles.
Price: $170; Contact: Garmin.com
Source: Popular Mechanics

Garmin Approach G5 Golf GPS
This model comes “preloaded with maps of thousands of courses” and can show the distance to any course target.
Price: $500; Contact: Garmin.com
Source: Popular Mechanics

Dash Express
The Dash Express “receives real-time traffic updates” and can connect to cell and Wi-Fi networks.
Price: $400, plus $13 per month; Contact: Dash.net
Source: Outside