Built-in FM transmitter Portable Audio Devices

The Bottom Line: If you're looking for a cost-effective means of bringing HD Radio into your car, the JVC KT-HDP1 is an attractive option.

Specs: AM/FM, LCD

The Bottom Line: The intriguing Sirius Stiletto 100 is packed with useful radio and digital audio features, and it's easy and fun to use. However, some consumers may find the Stiletto too bulky, and battery life isn't stellar.

Specs: Sirius satellite radio tuner / network audio player / digital player, Stereo, 4.7 oz, 1 year warranty, LCD

The Bottom Line: The Delphi SkyFi3 XM receiver/recorder is a flexible solution for home, car, and on the go for those who don't want to spend big bucks.

Specs: XM radio tuner / digital player, Stereo, 4.1 oz, LCD

The Bottom Line: The Pioneer Inno is compact, gets great reception, and lets you enjoy live satellite audio and your own tracks on the go. Better battery life and more storage would make this XM portable even better.

Specs: XM radio tuner / digital player, Stereo, TFT

The Bottom Line: The well-featured Tao TXM1020 XM2go satellite radio receiver brings the XM experience to your car, your home, or on the go.

Specs: XM personal radio, Stereo, 7.2 oz, LCD

The Bottom Line: Though not without its flaws, the Starmate is a solid compact plug-and-play Sirius receiver.

Specs: Sirius satellite/FM personal radio, FM, Stereo, 5 oz, 1 year warranty, LCD

Editors' Take: The first truly portable Sirius satellite radio doubles as an MP3 player.

Specs: Sirius satellite radio tuner / digital player, Stereo, LCD

The Bottom Line: Packed with features, the compact LDP-600 has a predictably overloaded user interface.

Specs: Flash player, 256 MB, MP3, WMA, Protected WMA (DRM), Lithium ion Rechargeable Player battery

The Bottom Line: Packed with features, the compact LDP-600 has a predictably overloaded user interface.

Specs: Flash player, 512 MB, MP3, WMA, Protected WMA (DRM), Lithium ion Rechargeable Player battery

The Bottom Line: Clarion's little black beauty is a Sirius winner, offering versatility and useful innovations.

Specs: Sirius satellite radio tuner, Stereo, LCD