Just wanted to let everyoneknow these work flawlessly with the iPhone.
Requires a professional install really unless your handy but pairs simply, copies all your contacts over from your iPhone quickly and is a breeze to use even with advanced features such as voice dialling.
I currently have a Kenwood deck in my vehicle, which has a built in Parrot bluetooth. When installed, they had to do a firmware update on the bluetooth portion, with an update designed for the iPhone3G. The sound was very garbled before the update, but is perfect now. Perhaps there is such an update for the equipment you have as well, since they are both from Parrot.