I'm on the phone pretty much everyday, working out of the home office or traveling which means a headset for calls is as mandatory as having a device for email. It would be a frustrating exercise to calculate how much money I've wasted on headsets over the years, both wired & wireless. The wired sets seem to have better sound quality (listening & speaking) but the cords always get jacked & the continuous untangling results in a short life. The Bluetooth sets die just as quick & I'd always replace them with a different model, hoping to find one that worked better but without much luck. To have a decent call w/ a Bluetooth, it seems you need to be in a soundproof room & sit perfectly still. Even if that was practical, what you hear & how you are heard is a roll of the dice & no mater which brand you pick or how much you spend, the calls are never as clear as a landline.FINALLY, I scored the Voyager Focus, hands down the best headset purchase I've made in years. Why? The sound is landline quality, I can hear everything clearly & those I'm speaking with hear me equally as well. It's loud when you need it to be & since the audio is in stereo, I have the volume turned lower than ever before. This is complimented by the noise cancellation which is really terrific, so much that I can be on a call with yelling kids in the background or a train can be passing by, & the background noise does not come across on the call. I tested this on a call in the city, walking downtown during rush hour & the call was as crystal clear as my office.The Focus also has terrific range, more than 5x that of any other Bluetooth meaning I can walk & talk around the office or home without needing to have my phone < 5 feet away. In addition to my mobile phone, it also connects to my PC, laptop, & iPad (easily connecting/switching between 2 devices at the same time). When if I'm listening to music & a call comes in, if I tap the headset to pick up, the music turns off & then turns back on when I hang up (a nice optional setting). Speaking of, the sound fidelity for music on this set is impressive on all ends. Since it has a great noise cancellation switch, I no longer bring the Bose headphones for the plane, using the Focus instead. Although it doesn't block out the background noise as much as the Bose does, it's close enough. It's a no-brainer since I can quickly switch over from music to pick up a call on my phone or make a Skype call on my iPad while sitting on the tarmac. I'm a hater when it comes to sitting next to someone blabbing away on their mobile. That said, when that call comes in & you need to take it, the Focus is the way to go. The audio is so clean, I can speak in a quiet voice (to be respectful to my neighbors) & those I'm speaking with on the call can't even tell.The Focus will also maintain a charge all day long (unlike my Note 5) & I've yet to have it choke for need of a charge. Admittedly, I still use my earbud headpiece (Plantronics Legend) when I'm out & about incognito. Although the Focus is lightweight & folds flat in a nice zippered bag for traveling, the over-the-head "call center look" is not so practical in between appointments. That said, for any important call where vocal & listening clarity is essential, I'll pull out the Focus & switch over. I write very few reviews but this headset is so impressive I can't recommend it more highly.