Summary: Only an option if you have an older car and don't want to put a new USB deck in (or the car's wiring simply won't take one), and don't want to burn .cda/mp3 to disk (or use a cassette adapter). It's a trade off, you get access to a huge catalogue on your player but the sound is somewhat diminished.
Pros: -Auto-tune to clearest empty stations, -Has a Pro/mono setting for a bit better audio for audiobooks/non-music stuff, if you need clearer audio for that.
Cons: -Audio is limited by the technology itself. Can only be so good., -Volume is usually quite low, you can max your car stereo AND mp3 player occasionally and it will not be that loud, -Bit of static, hard to avoid
Excerpt: I bought this because I was tired of making CD's all the time. I used to own the Griffin iTrip & it was so static-y all the time, I had to turn my volume up on the device to even get a good sound. The Belkin FM transmitter is WAY better the Griffin. The Belkin is sometimes static-y but once you find a good station, the sound is great. I didn't want to buy a complete new stereo for my car so the Belkin definitely does the job.
Pros: Charges Phone Too, Easy to use
Cons: Price Is Kind Of High, Sometimes Is Static-y
Summary: If it weren't for returns, this purchase would have been the biggest waste of my money. I wouldn't even have given it one star but it wouldn't let me. When I tried it out in my Ford F150, not only did I have to force it in my cigarette outlet, but it was also nearly impossible to find a clear station. There was ALWAYS static and my stereo volume had to be turned up unbelievably high to hear any of the music from my ipod.
Summary: This is a piece of junk. This is the third MP3 transmitter that I have had and it is by far the worst. I'm not an electronics guy but this thing doesn't seem to put out enough power. On my last transmitter ( $$$$$ but good) I would get the ipod playing and hit search on the radio to lock on the station. This doesn't have the signal strength from 12 inches away to lock the search 80% of the time.
Summary: Well, its as cheap as any other brand name item that transmits your ipod while charging it, so from that standpoint, its good. It installs very easily in your car, and broadcasts good quality sound. Its a little 'flatter' than listening to your ipod directly, but its negligable. I like it quite a bit, and I'd reccomend it to anyone.