I am looking to get 2 bluetooth headsets for my wife and I for our Droids. I am really eying the Plantronics Voyager 520. My question is if I got two of these and we synced up with our phones we will have any troubles if we are both using them and interrupting or picking up the others phone? It does do voice activating dialing which is going to be good since Oregon is passing a Hands Free Cell phone law.