similar - went through a pair of QC20 - replaced 5 times in 3 years. rarely do we get extended warranties - my wife had read a few places saying to get it, and we did. she got a pair - no problems, but she uses them at most a few hours a week. mine, I'm wearing probably 8-10 hours per day, 7 days a week. I slept with them in, initially, but I'm sure that contributed to the first breakage, so I quit doing that.