I'm using these for home recording, tracking and mixing.
I don't have proper monitor speakers and usually, it seems, headphones and speakers try to make things sound good. So I was looking for something I could use to give me a clear idea of the actual, non coloured, sounds that I was recording and mixing.
I did some research and heard really good things about the M50's, and was considering them. Then I heard a review of these that said that they might be even better, even though they were cheaper. Better and cheaper sounds good to me : )
They are relatively comfortable, don't really notice you have them on, until you take them off : ) I use the twisty cable, just enough length to go back and forth between the computer and mic without getting tangled or tripped over.
I use them for tracking, guitar , bass and vocals, so they had to be closed. They don't prevent 100% of sound escaping, you can usually hear a hint of the track, but it's never been anywhere near a problem for me, since the recorded part will be used with the track it was recorded along with.
I also use them for mixing, and despite being closed, with open being apparently more desirable for mixing, I have found them to be excellent in delivering a flat response and realistic representation of recordings. All the frequencies sound about right, especially the bass does not seem to be boosted, which is great. It's really annoying having mixed a track to find that the bass is weak when played on another system.