I used to have a HE-400 which died on me and a HE-500 which was stolen so I have been on the lookout for replacements. I loved both of them and they were absolutely mint so I would like to replace them with ones of the same condition if possible. I am flexible with price and am willing to pay above market value for either of these if the condition is exceptional. I have seen a few pop up here in recent weeks but was not quick enough to snatch them up. If anyone who did end up with one of those decides they are not for you, please let me know.