I have had mixed results with Bluetooth headsets. My biggest complaint has always been that the microphones picked up all but the quietest of background noises. The z9i from BlueAnt claims to reduce the amount of background noise that is transmitted. To complete this task, the z9i uses a combination of two microphones and BlueAnt’s Voice Isolation Technology. Sounds good in theory but does the z9i live up to BlueAnt’s claims?