While we certainly haven't reviewed every FM transmitter on the market (though we apsire to), we have tried out a fair share of winners and, more commonly, duds. As a matter of fact, most transmitters of the past were not very good at all. If you, like me, had to have one because you ran out of options for getting your MP3 player to play on your car stereo, you had to settle for subpar, static-ridden sound.

These days, however, it seems FM transmission is a legitimate option, with better signal strength in many transmission devices, including the handful of XM and Sirius devices that use FM transmission to beam satellite radio to a car stereo. (The FCC believes some device manufacturers have overboosted transmission levels.) If you have an iPod, you're in luck, since most transmitters are designed with that player in mind. However, most of the transmitters here include a line-in port so that you can use non-iPods. There are, of course, decent non-brand-specific models, too.

Product name	Editors' rating	Review summary
DLO TransPod (second generation)	8.0 Excellent	A worthy addition to your collection of iPod accessories, the DLO TransPod is one of the best FM transmitters on the market today.
Radian iBlast FM	7.0 Very Good	It's not perfect, but the Nano-only iBlast FM is lightweight and relatively cheap, and it works really well.
Speck Products MobileTune FM Transmitter and Charger for iPod	7.0 Very Good	Speck's MobileTune is perfect for iPod owners who dig the knob design.
iRock Beamit 440FM wireless music adapter	7.3 Very Good	We're not so fond of FM transmitters, but if you have to use one, we recommend the handy 440FM from iRock.
DLO TransPod for iPod Shuffle	7.3 Very Good	iPod Shuffle owners who appreciate seamless integration and useful features should consider the DLO TransPod for their FM transmitter needs.