I'm looking for a good cable in excellent condition for my Hifiman HE-400. I have the 6-sided SMC connectors. (I understand Hifiman also developed 4-sided ones.) I need something with a 6.3 or 3.5mm termination, 6.3 preferred. I'm not too picky about length - anything from 4-10 feet is fine. The cable needs to come from a smoke-free home, from a US seller. I'm looking for something under $100. Shoot me your offers.