GPS takes a hike

GPS navigation isn't just for motorists. Handheld units for hikers can help guide you from point A to point B in the woods. And some help even more with a topographical map pinpointing your location on the local terrain.

Those devices will display a route as a straight line, so it's up to you to avoid obstacles such as steep drops and rivers. They do record your route for return-trip guidance, and you can share your coordinates in case of an emergency.

Some can also display other information, such as hunting, fishing, and sunrise/sunset calendars. Maps include roadways, but the units we tested don't provide turn-by-turn driving directions.

Geocaching, a growing hobby involving treasure hunting on the trail, is also a popular use for the devices.

We tested seven models, all of which scored well in our Ratings (available to subscribers). Pricier models have more features, larger screens, and more detailed graphics.

The Garmin Oregon 400t and Garmin Colorado 400t include topographic maps and are full featured and easy to use. They have different interfaces but similar performance.

The Garmin Colorado 400t has shorter battery life. The Garmin Oregon 200 doesn't have topographic maps but costs $150 less. The Garmin GPSMap 60CSx has an electronic compass and altimeter.

If you want added features such as a camera and a flashlight, the Magellan Triton 2000 is a good choice, but its battery life was shortest in the group. The Magellan Triton 500 is more compact and has fewer features.

For a basic, inexpensive unit, choose the Garmin eTrex Venture HC, just $150. This no-frills model offers performance rivaling that of much pricier models.