Best in-dash GPS navigation systems

In one box, the Pioneer AVIC-Z130BT has all the must-have car tech features that most people could want, including hands-free calling, voice-controlled digital audio playback, and turn-by-turn directions with traffic data.

Rather than reinvent the wheel, Sony's newest all-in-one car audio receiver pairs a brilliant 7-inch display with GPS navigation powered by TomTom. The result is almost the best of both worlds, but we'd like to see a bit more integration.

The JVC KW-NT3HDT stands apart from the competition, both with its impressive feature set that includes HD Radio and traffic data and its rare detachable faceplate. Despite a few hardware and software quirks, we think there's a lot to like about this unit.

The Eclipse AVN726e will cover most users' hands-free calling, navigation, audio, and visual needs in a single installation. It is also an excellent starting point for system builders.

Pioneer's AppRadio has great potential as a cost-effective way to add touch-screen iPhone app control to a car's dashboard, but interface and multitasking issues will prove frustrating for early adopters.