Buy junk get junk. I have a 10 year old set of sony wired headphones. Reference tier sound still. For blutooth, how many of these devices allow the users to replace batteries to make it to 10 years and ongoing as I have done with my headphones? Bang and Oulfson afaik is it but you have to shell out half a grand for one of their headphone sets, plus the battery is proprietary so if the company gets some MBA holders at the helm they will change it slightly between generations and not sell older replacements, to force you to buy new and not leave money on the table.