GPS navigators: features increase; prices fall.(CR Cars)

Many new portable GPS navigators are less bulky, have more features, and cost less than earlier models. Recent marketplace changes have prompted us to change our Ratings of six months ago to reflect current performance and features. We tested eight new units for this report and included previously tested units that are still available.

Portable systems cost much less than built-in units and are ideal for multicar households or travelers who often rent vehicles. Most can easily be carried in luggage and concealed from thieves.

To use one, all you need to do is enter an address or choose a point of interest, such as a restaurant. It will then guide you with both spoken and onscreen directions. While the systems don't substitute for local knowledge, they can be a big help in unfamiliar places.

Many models include features such as Bluetooth compatibility, MP3 players, and photo viewers. One tested system, the Navman iCN 750, has a camera that can record and file GPS coordinates of a photographed location. Our Ratings are based on navigation performance, not other feature content.

Most devices have a 3 1/2-inch touchscreen. An included stylus usually indicates that onscreen buttons are small and awkward to use.

Units with bendable gooseneck windshield mounts tend to bounce. Mounts with clamps are more stable.

Even inexpensive units now have preloaded U.S. maps. Models with text-to-speech capability can identify streets by name, a very useful feature.