Full Range 0.7" LCD FM Transmitter with Car Charger/Remote Control for iPod/iPhone 3GS/4

Pros: It's tiny, and clicks into your iPhone tightly and without much wiggle, so it won't fall out. The frequency range is more than enough to find an empty spot, and it's easy to shuffle around if you hit a channel. Also the remote control is handy, but only when you're using it for controlling the iPhone.

Cons: The same problem with every other FM transmitter; background hiss. It's not so bad with this one, but if you listen to classical, ambient or easy listening you'll notice the familiar radio interference noise. This has an auxiliary input, but strangely you still have to have it plugged into your iPhone or it won't power. I bought this to run my old mp3 player in the car, but now I have to take my phone out of my pocket every time I want to listen to music. I couldn't see a way bypass it, and the fact that you can plug it into your power socket means that the power runs through it, but curiously can't power the device itself.

Other: It's a great little unit, surprisingly well made, in a retail box that's fit for gifting. I wasn't overly happy about it not being self powered with the power socket, but I can live with it.

Pros: this thing is exactly what you want for cartrips with your iphone/ipad/ipod keeps it charged and brings your music into your cars sound system.

Cons: as expected the radio interference from other devices in populated areas can get annoying.. you wont get great bass from this as its a pretty weak transmitter.

Other: doesn't require batteries & charges your phone while transmitting your songs via FM radio.. what more could you want? (ok digital radio would be ace) this thing is a great buy for iphone/ipod/ipad owners