I have never been a big fan of bluetooth headsets but lately i have been taking so many work calls on my cell phone that the need for one is increasing. My big concerns are noise cancellation, comfort, and battery life. I will be wearing this thing for several hours often on long conference calls. I would often be using this at work in a noisy cubicle environment with others talking around me so noise cancellation is very important as well. Mute functionality would be nice, but if it has good noise cancellation it isnt critical. I recently purchased a Plantronics 975 from the CellPhoneShop and it came in an opened package that looked to be someones return. I tried it out and it was very light, semi comfortable, but there was some static in the headset, and it didnt do any noise cancellation at all. The people on the phone with me could identify who the individuals were talk around me. It was picking up other peoples voices that clear who were in their cubes talking on their own phones. Im not sure if i had a faulty model or if this is the norm. Regardless i returned it, and I am now back on the hunt. What is everyone's recommendation? I have primarily been looking at the Jawbone Prime, or Voyager Pro but I am not opposed to hearing about other peoples recommendations or choices.