To sound like a dick, stop listening to terrible recordings! I went through the same thing for the first few weeks I had these. If the recording is sibilant these wont hide it.
Going triples here, hehe.
That surely sounds good, although I would use vocals as the last tool for evaluating headphones. For some reason here on head-fi, vocals for some are a synonym for mid-range (not saying that for you, just making an observation). Some TV-enthusiasts talk about skin tone and not absolute color reproduction, which by my logic would consist that sub-category. But I guess it's something of an emotional thing. To me, mid-range is everything. I listen to a lot of Miles Davis and Frank Zappa kind of stuff, and it's all mid-range basically. And the better everything is distinguishable, the better the mid-range. :)
So I take it no one has done a comparison between these and the K271/272s... *sob*
No idea if they'd beat the K271s, but sounds like you wouldn't mind these too much! Midrange is out front and center, everything is very defined sounding, and there's a great sense of transparency I never felt on my other headphones. Every sound seems to have a clear edge against the background, and the imaging is very precise with decent depth, which gives things a sense of realism and you don't have to strain at all to figure out where things are in a recording. The 840s seem hazy and the HFI-680 is flat and dull in comparison when it comes to imaging and separation, which weren't complaints I'd ever have before I listened to the 940s. Didn't know what I was missing.
The only issue is that the treble Beyers out a little bit, which is its bit of flavor, so you get some extra sizzle on cymbals and the upper midrange, and how good that is varies by recording. It's not harsh or sibilant, but it can sound sharp sometimes. To me though they are not very bright, which makes me wonder if the treble peak comes out very differently for some people.
That's about it though, they're such nice sounding headphones. They do everything my other headphones did well and do it even better, which I think is really nice considering the MSRP.