Are any of you experiencing any Quality issues with the HE-4XXs ? Mine are nearing 2 years old and have been perfect in functionality and general build construction. I've noticed late there are several comments on Drop of people complaining how poorly built they are and that is not even close to my experience. Also they Dropped the price to $130 which if I was not looking to upgrade to a better Hifiman than the 400 and the 4XXs I own getting 1 more at that price would be a great purchase imho. So have they performed as good for you as mine has for me ? and if you have had an issue has Hifiman done right by you ? When I have had issues with a companies product (Sony ) I give them a chance before dragging their good name through the mud to address an issue.... also if I've had a good experience I will let that be known as well ( Geshelli Lab's , Hifiman , Sennheiser etc ) Just curious as to how good yours have been .