Am done. I have tried them all from the cheapest( Scala) to the most expensive( Sony Ericsson) to even palms own. The bottom line, they all dont work right. The audio quality is not good enough, particularly if you keep your treo in your pocket and not on a belt clip. I doubt if it is the headsets but more of a problem with the treo. They really need to address this in the next version of the Treo.