D600 are one of the best audiophile EDM-specific cans in my opinion. Much better than M100. If you value clarity. I can´t stand muddy sound in EDM (vocal melodic trance). M100 is just slightly better than Pioneer HDJ-2000 (in my personal opinion). D600 sounded definitely more natural in mid range than M100. D600 is only bested by well amped Senns HD700 (with good bass boost) for vocal and uplifting trance (surprisingly one of my favorite cans for EDM). Check Z review on youtube of D600 (funny but I agree with him in most areas). D600 is very very underrated. For me is one of reference cans (for EDM). Bass is even much better and deeper than that of Fidelio X1 and X2, more sub-bass, more punch, and those two have more bass than HE400s and HE400i. D600 offer: Bass+clarity+soundstage (comparable to X1, just slightly narrower). But they´re not as portable as M100.