The Plantronics CT-10 seems to have the best design of all of the cordless headset phones I looked at. The headset is light (note: flimsy headband), the cord to the phone unit is long enough without getting in your way, and the phone unit is small and convenient. You can clip it on to your waist to keep it out of your way yet access it easily as necessary. The battery functions as the belt clip and it is cleverly designed to clip upside down (which means *facing* your face.) All around a clever design with good features. With such a great design it is so frustrating that it doesn't work well at all. I have problems with very loud, irregular helicopter sounds on the line. I have checked out my phone line, tried other phones, replaced the entire Plantronics unit (Amazon was kind enough to replace it free of any charges), and talked to Plantronics tech support to no avail. It is getting so irritating and distracting that I have almost completely stopped using it because of the constant yet unpredictable noise (other side of the call can't hear it). There is also a LOT of static created if you barely graze the headset jack (this is audible to both sides). Finally, the battery charger sometimes doesn't stop charging when the battery is full and both become extremely hot. I'm afraid I will have to pay for a new battery sooner than expected (a shame because the unit is designed to stop charging when the battery is full to protect it.) Plantronics: please fix your product! The design and features are phenomenal and I'm hooked, but I cannot deal with the noise anymore!