Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3) I've read that the 4S supports a newer version of Bluetooth (4.0). Is there a headset out there that fully supports and takes advantage of this? What headset do people around here recommend? I'm looking to invest in one that plays nice with Siri so I can chat with her in the car. Looking for something comfortable, not bulky, and preferably one that I can listen to music on in a pinch. Edit: Oh, and one that plays nice with the Tom Tom app would be great too!