Photos: Navigating the GPS navigators

The Garmin Nuvi 680, which sells for about $620, is the company's top domestic model. Pogue says its "smooth, fast, and good-looking, showing the kind of polish you can achieve when you've been playing the GPS game for years. "

The screen is incredibly bright, with beautiful 2D or 3D maps, he said. And the Nuvi can receive MSN Direct, which gives you traffic flow indicated with color coding on the maps, as well as weather, local movie showtimes, and even local gas prices, Pogue added.