iTrip by Griffin Technology

The iTrip transforms your iPod into an FM radio station. Installing the unit onto your iPod is as easy as connecting it to the Headphones and Remote ports on top of the iPod. Then you run the iTrip installer from the included CD.
After you have installed the iTrip’s software, a playlist called iTrip Stations will be installed in your iTunes Library. You then update your iPod so that this playlist is moved into the iPod’s music library.
To select the frequency on which you want to broadcast your iPod’s music, you browse the iTrip Stations playlist and then choose the frequency you want to use. After you press the Play button, the iTrip will be set to use the frequency you selected. The iTrip’s LED indicates when the selected frequency has been started on the iPod by first blinking rapidly; when this happens, you pause the iPod and the LED blinks three times slowly to let you know that frequency has been selected. After that, you tune your FM radio to the frequency you selected and play the iPod to listen to its music.
My main qualm about this unit is that it takes some time to get used to how to know when the frequency you have selected is being used—you have to look for a series of LED blinks to let you know this. And, it would be nice if there were some way to use a remote at the same time you are using the iTrip.
Other than those quibbles, this is an excellent device, and its range of available FM frequencies can’t be beat by any other transmitter. Because it doesn’t require cables, it is definitely the cleanest and easiest unit to manage.

Web Site: www.griffintechnology.com
List Price: $35
Pros: Unit attaches firmly to the iPod; provides an astounding range of radio stations to use (basically you can use any available station); very stylish; no cables to deal with; the iPod and transmitter become one unit; powered by the iPod, so you have no additional batteries to deal with; works with the iPod and iPod mini.
Cons: Fills the Remote and Headphones ports, so you can’t use the iTrip and a remote control at the same time; requires more complex steps to select the radio station to use.