I have an 05 BMW M3 that I hook my phones up to via bluetooth. My previous Blackberry Pearl worked fine and my Sony Ericsson before that worked fine as well. My iPhone does not work fine, however. It doesn't have any problem connecting, but the audio gets choppy intermittently. For example, if someone calls me while I'm in the car, it usually takes 10 seconds or so for me to say 'hello, hello...' until I can hear them. Then during the call, there will be a few times when they get choppy again - it comes and goes. Also, if I'm on a call when a text message comes in, the audio gets very choppy (or cuts out). I'm trying to figure out if this is an issue with just my iPhone or if they all will exhibit this behavior. Anyone have any experience with this? Thanks.