Well 40 hours into my brand new A20 and they have crapped out. I thought I might get lucky and not have one of the duff mic cords but no such luck.
I can't believe I got sucked into buying another Bose. My X needed to go to the shop 3 times in the 5 years I had it, 2 of those times for cord/mic problems.
Bose is good about warranty repair issues within the 5 year period, but then with the reliability of this headset they need to be