Originally Posted by
btwissel
the Pro headset is TSO'd, costs an extra $200, and has a few extras listed on the website
see
I think mine was only about $100-150 extra.... the Pro / TSO'd version mounts the mike behind the ear, and the cheaper "differently".
I found (by trying both on at Marv Golden supply in San Diego KMYF) that the Pro was better balanced, and lighter.