I decided to finally treat myself to a pair of quality headphones for a self-birthday present.  After hours of online research, the AH D1100 seemed to offer the best bang-for-the-buck under $200. Out of the box they were great, with good range, pleasing bass, and multi-hour comfort (though the ears get a little hot and sweaty because the seal is so good -- obviously great for keeping the good noise in and external distractions out). But within a month of owning, hairline cracks began to appear in the silver plastic head band.  Another small...