No particular axe to grind, but a month ago my Telex 850 broke at what I percieve to be a weak point at its connection to the earpiece.
I'm a UK based long haul pilot, but sent it to Telex in the US. About two weeks later, it was returned, repaired with new ear covers/clips etc, free of charge and 'insured' for another three years.
I have to say I am impressed with the service, a problem I had many years ago with a GA type headset was dealt with in a similarly expeditious manner.