HD-668 B : Very good value for the price

Build quality and sound-wise I have absolutely no regrets picking these headphones up. If I had to be hard on something, the default pads are a bit hard on my eyeglasses, but that is hardly a big thing considering it doesn't generally lead to tiredness or pain - even during very long (eight hours plus) working sessions.

On the rare occasion there is pain after a very long session, it most often is actually due improper placement because of one reason or another.

All in all, would buy again; the price performance is quite awesome and the sound quality is pretty much as much as you could get for this price range - what's left is the style of the sound and that is "what you happen to like" territory.