Looking for a pair of Hifiman He400/500 or Senn 650's or equivalent. Would prefer to trade, but can add cash either way. Can trade two or more pairs of my cans for your Hifiman/Senn/etc. Here's what I have. Everything is either in mint or brand new condition: Monster Miles Davis Tributes Beyerdynamic t50p Sennheiser HD555 Klipsch X10 Shure SE210 Klipsch Image ONE Rebranded Etymotic ER6i's (Harman Kardon EP720's) +/-cash You get the point. Pick whatever you like and lets make a deal!