I've gone through 10 pairs of KCS-75s and I'm about to buy another. What I'd rather do is spend more money on someone replacing the cable with something high quality - I don't have the time or patience to do this currently. I was also thinking about spray painting the nasty cases on these things. Anyway, I'm pretty sure what has broken on the ~10 pairs I've had is the cable (every time). The other consistent defect is buzzing/rattling in one of the speakers (but this usually goes away). Without these two issues and a nice coat of black or white paint - these headphones are ideal for my usage pattern.