Hands free devices over car stereo

[Sample00]

I didnt bother doing a search but I thought I would ask what you felt was the best hands free device for a cell phone.

I would like one that broadcasts over the vehicles stereo system where the stereo is not bluetooth. So basically that part of it will need to be an FM transmitter.

I have the Iphone 3GS.

It would also help if this device would allow the playing of my music over the vehicle's stereo.

any thoughts?

[amorak]

You'll need bluetooth for this.