This is probably the wrong place to post that but because you are already discussing around this, I'm also chasing a closed headphones as I won't be able to listen to my HD600/HD700 anymore for the coming months.
I already have a Mad Dogs 3.1, I like it but I'm looking for something clearer, less "closed" because at the end even if they are very good, I find them a bit claustrophobic.
I was thinking about Kef M500 or HP100 or maybe Signature pro if I can find a good 2n hand price.
I might consider TH600 as well but I have no comparison between m500/HP100 or Sig Pro/TH600... if by chance somebody woud have an opinion... thanks
Oops. I guess this is the wrong place but I really do enjoy the sound signature of the HD600. Now only if Senn make one with a closed port that sounds exactly like the HD600.