IMO the HE-400i and the HE500 are very different headphones. Personally I like the HE-400i more - it is more neutral and detailed, but the HE-500 has that magical midrange that the HE-500 simply does not possess.
Anyone interested in a meet in the first half of 2015? Been a while since the last one and we seem to have one every 6 months or so.
The meet is at the 28th of April and will run from 7:30 to 10:30. At the Noisy Motel, thanks to Billy.