It's official ladies and gents, I've gone track for track, back and forth between the SM3 and W4. The SM3 has won me over, and having improved the comfort issue (for the most part), the SM3 sound signature comes out on top! To break it down further, here's why:
Comfort: W4 = SM3, only after the slight adjustment I made with the SM3 (
see post above).
Seal: SM3 comply's > W4 comply's. Both are excellent in their own right, but the SM3 would be my preference here.
Treble: W4 = SM3; that doesn't go as to say they both share significant similarities here; it simply means I find both to do an excellent job, and don't prefer one over the other.
Midrange: SM3 > W4. They had me at "hello!"
Bass: SM3 > W4. Need I explain again? SM3 = you feel and hear the music; W4 = hear the music more than you feel it. Hence, it's mostly preference here.
Soundstage: W4 > SM3; the W4 is ever so slightly wider all around, though the SM3's lows and mids make it extremely easy to forget everything else.
In short: The listening experience that the SM3's provides me is simply the best I've heard as of yet. When amped, they are an entirely different beast, and the Headstage, believe it or not, does a phenomenal job IMO, in taming the highs (impedence + gain, both on low/high settings; making it practically impossible for any sibilance to occur), in tightening the bass (bass boost on low/high, which puts the SM3/TF10's easily up to par with the IE8's), and in centering + widening the soundstage ever so slightly (via crossfeed set to low). I'd be willing to let the W4's go if it were to end here; but as you know, it certainly doesn't end here! I've yet to hear the rest of the contenders (which can be found in the
second post), as well as some additional ones I hope to acquire for a third (and maybe final) round; including, but not limited to, the FX700, EX1000, e-Q5/Q7, DBA-02, and MTPC.