Does anyone have experience using a CCM brand cell phone hands free car kit? It's the only system I've seen that uses the phone's headset jack instead of the clumsy clamp-on mic over the receiver. It's also one of the few that isn't RF. RF devices don't work well enough for me in MBs with the tuner in the trunk. I wish it had a big glaring mute button so I don't have to futz with the phone's mute feature.

Thanks,
Sixto
95 S420
87 300SDL