To add to what I said earlier; if the future high-end isn't an M100 replacement, you could add magnesium wing plates to future produced M100s, raise the price by $30 or so and they would still be a steal at $300.
It may be a small percentage of occurrences, but I do worry about the future. My 2 year warranty is up feburary 2016. If the issue creeps up again after that, my only choice would be to utilize the immortal life program and still have to spend $135 for a new set of M100s. Not terrible, but not enticing to fix what should be considered a factory defect.
I don't mean for this to come off as derogatory; I love my M100s. But hopefully there's an outcome everyone is satisfied with.
DT770 80 ohm and possibly oppo PM3 on order as I DO NOT want to be without a good set of headphones should another issue occur.
What color are yours?
Matte Black