i would have to say i tried the h700 jx10 bt640 and a few others and the best out of em all is the headset im using now the gennum nxzen 5500plus i was gonna try and sell it and im sure glad i didnt. There is no static and people actually tell me i sound better on the headset then i do on the handset. Oh ya and as a bonus the noise cancellation really works. None of the others that i tried actually worked. Heres a link to it
http://www.nxzen.com/product.php.