My M60s showed up today. To say I'm satisfied would be an understatement.

So much more of...well, everything. Though I haven't had a chance to compare them directly to my M3s (need to get some more speaker cable), they sound so much more effortless in everything they do. More detail but smoother, different layers are more distinct, and the soundstage is incredible. Even from the other room I'm picking up lines that don't normally stand out. Madeleine Peyroux sounds incredible right now. The depth of the soundstage is incredible - the piano feels like it's right next to me, the guitar a little further back, drums center and further back still. Nice!