What is the best FM transmitter for an iPod?

Now, remember... FM transmitters will never be as good as direct line input to your car's stereo (like using a tape deck adapter). The sound will be fuzzier and the volume will be lower. It's just the nature of the beast.

That being said, there are stickies and other posts on this website that discuss these things. Try a search for Accessories or Transmitter. Specifically, go to the main forums page, go to iPod Gear, and then iPod In-Car Solutions:
http://www.ipodlounge.com/forums/forumdisplay.php?s=&forumid=44 (there i just did it for you).

I've tried both Belkins old Tunecast (which only let you pick 4 stations: 88.1, 88.3,88.5,88.7) and I just got Griffins iTrip. I also live in Los Angeles, which is **crammed** with radio stations, which makes it really hard to use an FM transmitter. The iTrip works pretty well, and it's relatively easy to change stations (don't do it at high speeds on the freeway!). You'll see in the link above a big, boxy hardcore FM transmitter that apparently does a really good job (very strong signal) but it's more pricey (?$80?) and kinda clunky looking.

Ya kinda have to pick the lesser of the evils when it comes to FM Transmitters, at least in a large metropolitan area like LA or NYC (Because there are SO many radio stations). Maybe in other less populated parts of the country you won't have to switch stations too often.

Don' t fall victim to anybody telling you there is such a thing as "very strong signal". The FCC regulates EVERY personal FM transmitter lagally sold in the US to be limited in output power. The only difference could be in the antenna used, or the location your transmitter is placed in relation to your car stereo's antenna. If you are electronically versed,you *may* be able to boost the output yourself.
That said, the TuneCastII at least lets you memorize four frequencies you know to be available in the area you travel in. I also appreciate the fact that it has a separate frequency display that lets you leave your iPod alone while you are listening. I find that easier to use than the iTrip. I do like the iTrip's design better although it only works with the iPod while the TuneCastII works with anything with a headphone out port.

I have an itrip and its great for certain purposes, but i DO NOT BELIEVE it is a long term driving solution.

Its worth just spending a bit and getting a input jack on the front of your stereo. (which i think all new head units should have by now considering the proliferation for portable devices)

the lineX one off ebay for ?20 is amazing

blocks out any signal for around 50m

we use for broadcasting throughout our whole house

RCA inputs into your stero head, or a tape deck solution. I would never put myself through the misery of a FM transmitter