The headband looks absolutely terrible after prolonged usage and the fact, that you cannot get a replacement, like you can with the ear pads, even though the headband comes off so easily, is just ridiculous.I sometimes wear mine for a whole workday, and while I do get condensation in them if it’s really hot inside, they’ve never failed. I bought mine a month or so after launch.
A more pressing (no pun intended) issue is the canopy losing its springiness and Apple won’t sell a replacement. That should be an article on here!