...that isn't the K550. I'd like something that has a good clamp-like fit (a la HD558), which doesn't require a crap ton of fiddling around to get a good seal. Preferred (p)leather earpads and detailed sound. Velour is acceptable if the set still provides good isolation. Soundstage isn't as important, as long as it provides better soundstage than typical closed cans.
I'm a little torn at my choices right now. Here's what I've looked at, and why they won't work for me:
-AKG K550: Too finicky about fit. They barely provide any clamping force of their own, yet they sound poor if they're not glued to your face. I've tried them on and did not like the feel.
-Shure SRH-840: Judging the sonic signature based on reviews, this is the most tempting choice right now. The only issue is the lack of detail.
-Shure SRH-940: Treble-oriented, plus the build quality issue...
-Beyerdynamic DT770: Recessed mids and a bit bassy.