Navigon 7100's Reality-View

What It Is: The newest generation of GPS tools is packed with multimedia functions. No longer mere direction-givers, high-end navigators are bundling hands-free phone-calling, music-playing and traffic-warning tricks into one sleek device.

How to Get It: TomTom's GO 720 offers driving, biking and walking directions and can also gauge arrival times, warn of traffic ahead, play music and direct you to help. Inaccurate street names rank among the biggest complaints of navigation tics; TomTom's users might most be enthused about "MapShare," which lets users edit street names on their own maps and upload changes.

Navigon's 7100 unit comes with optional settings that include warnings when you're five miles over the speed limit, planned routes that avoid toll roads, and Bluetooth-enabled hands-free calling.

Harman/Kardon's Guide + Play GPS-810 could double as a media player: It plays video as well as music on its 4-inch screen. Files are uploaded via a flash memory card and can hold up to four gigs. (The GPS-510 and GPS-500 models also support video.)

Full story continued at The Wall Street Journal : Autos.