Anyone have a recommendation on which bluetooth headset to use with the Cisco SPA525g2? I have try the plantronics voyager pro + and Jawbone era. Although they work very well with my iPhone, they sound pretty bad at the far end when I use them with my Cisco. Any suggestion? I really want to have a wireless headset that is decent if not great in terms of sound quality with my Cisco without spending a lot of money. Thanks.