Summary: After a week of use, I have been most impressed by the Noise Canceling Feature. The Bluetooth feature, read cordless, started the quest which ended on the Sony MDRZX750BN. (they need a more simple name) Using them daily in a work environment required a wireless function.
Summary: As soon as I put these on I knew they wouldn't work. The earpieces hung below my ears and they slid around my average sized head! I had my husband try them on (he has a large head) and they slid on his head too. Have no idea of the sound quality, but we found them to be unwearable.