Each had their shortcomings. Here are my Cliff's notes:
- great bass and decent overall sound, but sibilance even though highs were not overly bright, could be more detailed and more portable friendlyM-Audio Q40
Sennheiser Amperior- nice sound, but not worth the price, little sonic difference from the HD25, not very detailed
ATH-PRO700MK2- incredible bass but soooo dark
Denon AH-D400terrible treble fall off- muffled; muddy one-note bass worse than any rapper can
Denon AH-D600really good, detailed mids and highs, but muddy bass and almost nonexistent sub bass
I also have two contingency headphones if the M-100 doesn't work out. If the contingencies don't work out, I'm retiring from Head-fi and going back to the stock earbuds that came with my Iphone.
I'm so glad my post didn't make you mad! I feel like lately I've let personal life things color my communications with an abrasive tone... it's not you, it's me feeling jaded and trying to brush it off with a little silliness. I do sometimes see what looks like people being swayed by mob mentality, and certainly 5 headphones in about two months is some sort of shopping luxury in your case (maybe I'm just jealous?), but it does seem like, though those are all pretty much new (or new-ish) releases, you aren't buying into the placebo effect of new gear.
I too went Lo-Fi for a time, enthusiast gear just started to seem like a hassle and I got sick of my music, but I never could go back to earbuds (comfort issues), and eventually I realized I needed some exciting new music! And then... a free subscription to Stereophile and moving into a Headphone-required environment brought me (sucked me!) back in to Head-Fi. I'm hoping to be set in equipment soon, and get back to music. Most of all I want work to feel inspiring, but I doubt music will directly affect that