Edited by Atilio - 2/3/13 at 11:47pm
In this price range and size, I found the to be the most comfortable. I haven't tried the M50 on, but I can tell you against the hd380s I tried in store for an extended period, I still liked the DNA, as it fit my ear better without getting overly hot.
I can also attest to it lacking sibilance on both my phone, old Sony mp3 player, multiple computers I have used it on.
This is my first post. A friend of my recommended this site at THE site for good headphone info.
I have a question about the Monster DNAs. I just got them as a birthday gift, and I'm really enjoying them. (They're my first pair of decent quality on-ear headphones.) But I have one issue; the headband has almost no cushion. The ear pads are very soft and comfortable, but after listing for about 30 minutes the top of my head hurts, even with the headphones extended to their maximum size.
Anyone else having this problem? Any suggestions?