I've tried the new Plantronics 925 and the new Jawbone II and hands down the Jawbone II is the best headset. It really works to eliminate all background noise. I made a call from my living room yesterday while my two older boys and two of their friends were playing Halo 3 with the stereo surround sound cranked up! The person on the other end said they couldn't hear any of the noise in the background!
to buy one from Amazon...the best price around! Also, using this link helps support the E.O.K. site!