I have the Costa fathoms and have had them for about six years now with no issues. I abuse the hell out of them as well. You can Imagine what I put them through with two tours to Iraq and one 10 month depliyment at sea with the USS IWO JIMA.
On the other hand, my wife has the same model and she is on her second pair. Same issue that others had, the rubber around the ears go bad.
Good luck
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