bapu
I had a brand new (in the box) HD500 in my studio for over a year. Never used it. Sold it. Don't miss it.
As much as I miss my (old) Marshall 2550, I think the HD500 is nice for my needs

I got it for about half price..
Edit: Half of secondhand price

I managed to trade (not the same person) my HD300n for a HD500 in under a week