Gotta go blow the leaves (otherwise known as the iem isolation test), quick comment. Decided to do quick comparison of my recent over and on ear headphones, the Pioneer HDJ-2000, Martin Logan Mikros 90, and the Beyer DT1350 (all available at discounts one place or another...the DT1350 was being sold on the auction site of Best Buy, someone got them for about $80-90, I had to to to $110. I think they may be on the discontinuation block like some of the others, has been popping up significantly below list price other sites as well). My quick rating: Beyer>ML>Pioneer. Initially liked the Pioneer, still do if listening and not comparing. It has great, palpable bass and really rocks. The highs seem rolled off, soundstage is narrow, and detail not as precise as the other 2. (there is a post on modding the Pioneer here on Head-Fi, not something I'm inclined to do, but I can see why...there is a great headphone hiding in here somewhere). The Mikros is an odd bird...it does some things incredibly well, others not so well. Start with the negatives...odd shape which some find uncomfortable. I don't mind it too much, but find I keep fidgeting with it like an iem I'm trying to get a good seal on. Little shifts bring the bass in and out of focus. Speaking of the bass, it is there, with a good edge, texture, but less in amount than the other 2. You hear it, but don't feel it. Getting the fit exactly right brings it up much more, but it's never like the Pioneer or Beyer. The positives-incredible wide/deep soundstage, black space between instruments, excellent high end, excellent mids, excellent at retrieving detail (and because of the wide stage, they don't jumble or hit you in the face...just there, can hear them without mucking up what's the main body of the music. Too much detail sometimes can obscure the main "plot line", so to speak...not here. Great texture of instruments as well (they were supposedly going for electrostatic speaker sound, think they did that well). The Beyers...so far, and they are the most recent arrival, they seem to combine the best of the other 2. Good soundstage (for a closed speaker), though not as wide as the Mikros. Great bass, detail, rhythm, space between instruments (though, again, not up to the Mikros). Also pretty comfortable, and good looking (Mikros looks nicer to me, but UMMV...Pioneers very generic. Beyers not going to wow the Beats Generation, not flashy or stylish, but not embarassing to be seen in eiher). OK, stalling my date with the leaves long enough, gonna go make some noise!!!!!