guna have to ask pzztgotbagz I am currently using the OEM version. I didn't like the way it worked with my Plantronics 640 but that was 2 bluetooth devices ago. I think I will try it but I need to get used to the nXZEN first. This thing dose so much that I carry the cheat sheet with me so I know how to use it. Not to complicated just lots of features.
