3 1/2 stars
Weight: 6.5 oz.
Dimensions: 4 by 3 by 1 in.
PROS This no-frills device delivers solid performance for the money. The Maestro's antiglare screen offers good graphics, while a pleasant electronic bell alerts you to your next change in direction. Give the Windows Mobile 5.0 software some credit too: Changing the volume or switching between map and text views can be done with a single tap on the screen.
CONS The 3100's windshield mount is overcomplicated and hard to pack. Its small speaker lacks oomph, so it's tough to hear directions with your windows or sunroof open. And unlike more upscale devices, the 3100 doesn't offer a traffic-monitoring option.
BUY THIS ONE IF ... You want a bargain-priced just-get-me-there device.