IMO Ultrasone's offerings are colored in a very specific way and do not have as natural a tonality as the M50. They have a different tonality altogether that's more suited for electronic music. That said, they're still very detailed and fun. The point is, the M50s are quite a different headphone than the 580 and in the end, whichever headphone you like better solely depends on your preferences. I'd rather have better timbre accuracy (my genre preferences play a big roll here also) than a wider soundstage so the M50 come closer to suiting my all-around needs. I also value the build and seal I get with the M50 over the 580. You see? Preferences.
Edited by roma101 - 8/6/12 at 8:39am