I take back what I said about the PS1000, although the price is high I would consider it if a good S/H price came around. I'm borrowing a pair from a friend of mine and they are a lot nicer with the right recordings than what I have given them credit for. Key is the right recordings though, Jazz is very nice and vivid with them. I think they are perfect for some of my darkest rock recordings. I have enough ~2500 jazz, acoustic tracks that these sound very nice with. Currently enjoying Portico Quartet with them.
I doubt I would buy them as my only headphone though, I'd go that way with the HE-500 probably as an all rounder. Still a interesting complimentary can for a collector I'm sure.
It helps that I listen rather quietly a lot of the time at night here though ~ they sound better lower than most headphones typically do. Loudness curves and all
the PS1000 works well at low volumes.....