Hands free or headsets that work with iphone 3gs??

[S3 Paul]

Ive been looking at getting either something like either a parrot hands free kit fitted to the car or a headset/ ear peice of some kind.
Im not constantly on the fone while in the car but the three points it carrys doesnt apeal to me.
I did read that not all kits work well with the iphone.
Do people have any experience ??

 

[PMG]

I use a Parrot, one of the old ones that looks like a one-line LED strip which works perfectly with my iPhone 3GS. Just picked up a loan A3 Sportback 2.0 petrol turbo today, which I'll use until my new car is delivered and it has a Bury hands-free kit. This seems to work very well too, a colleague has this and it works fine with the iPhone 4 AFAIK.