USB flash drive playback In-dash car stereos

The Bottom Line: The JVC KD-AVX77 El Kameleon is a great receiver for system builders, but the touch-screen interface isn't as easy to use as some of the competition's physical control schemes.

Specs: 5.1 channel audio line-out, USB, Composite video/audio input, Composite video/audio output, System components control bus

The Bottom Line: 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.

Specs: In-dash, LCD monitor, iPod compatible, ID3 tags support, Bluetooth audio streaming, Rear-facing camera capability, Bluetooth hands-free for cellular phone, 50 Watts x 4, DVD player, LCD display, Radio tuner, Digital player, GPS navigation system, CD, DVD, CD-R, CD-RW, DVD+R, DVD-R, DVD+RW, DVD-RW

The Bottom Line: For people who listen primarily to MP3/WMA/AAC audio, the Alpine iDA-X305 offers one of the easiest-to-use interfaces for in-car browsing of digital media.

Specs: Radio / digital player, Radio tuner, Audio line-out, USB, System components control bus

The Bottom Line: The vast array of features offered by the JVC El Kameleon KD-AVX44 creates a car audio experience that rivals all but the best preinstalled receivers.

Specs: 5.1 channel audio line-out, USB, Composite video/audio input, Composite video/audio output, Composite video input, Navigation system input, System components control bus

The Bottom Line: The Sony Xplod CDX-GT920U offers many options for connecting to your digital music library and supports the most commonly used formats, unless your music library is on your iPod.

Specs: Radio / CD / MP3 player / USB flash player, Radio tuner, CD / MP3 player, Audio line-in, USB, Rear channel output, Front channel output, Subwoofer output, System components control bus

The Bottom Line: The DEH-P6000UB is a good-looking, good-sounding car stereo with great iPod support and some decent audio-tweaking options.

Specs: Radio / CD / MP3 player / USB flash player, Radio tuner, CD / MP3 player, Audio line-out, Audio line-in, IP-Bus, Remote control, USB

Specs: Radio / CD / MP3 player / USB flash player, Radio tuner, CD / MP3 player, Audio line-out, Subwoofer output

Specs: In-dash, LCD monitor, CD text, Built-in clock, On-screen menu, iPod compatible, ID3 tags support, Rear-facing camera capability, 50 Watts x 4, Amplifier, DVD player, LCD display, Radio tuner, Digital player, CD, DVD, CD-R, CD-RW, DVD-R, DVD-RW

Specs: In-dash, LCD monitor, Built-in clock, Telephone mute, iPod compatible, ID3 tags support, Upgradable firmware, Dual-zone capability, Bluetooth audio streaming, Rear-facing camera capability, Bluetooth hands-free for cellular phone, 50 Watts x 4, Amplifier, DVD player, LCD display, Radio tuner, Digital player, GPS navigation system, CD, DVD, CD-R, CD-RW, DVD+R, DVD-R, DVD+RW, DVD-RW, DVD+R DL, DVD-R DL, Video CD

Specs: Radio / CD / MP3 player / USB flash player, Radio tuner, CD / MP3 player, Audio line-out, Subwoofer output