I have the honor of kicking off this feedback thread for a great Head-fier, amp2xpand. He's been around on Head-Fi for a while now, but he's just recently gotten into the game of buying/selling gear on the site.
Anyway, I sold amp2xpand my pair of Alessandro MS-2s. What a pleasant transaction! He was very open, direct, and communicative, asked great questions, and in the end we reached a deal that worked out great for both of us. He paid immediately, and he let me know when the headphones arrived safely. All around a great guy -- I highly recommend dealing with him and would gladly do so again!