I'm spending tonight listening to the ESP950, now that I've got both the HE-500 and HD800 sound internalized. I take back the notion of recessed mids. It's not recessed, and the vocals are actually forwards enough. It lacks the refinement that the HE-500 and HD800 has because as mentioned before, I find it a step below those two on transparency. Also, after listening to the HD800 for a week, going to the ESP950, I can definitely notice the difference in soundstage and detailing. I would more so than the HE-500. The ESP950 is probably the weakest in these two areas of the three cans.
Still I'm enjoying these, especially the treble and strummed instruments. It has a very clean sound as stated before that does not create extra resonance or reverberations that's especially apparent with these strummed instruments. It's also very laid back sounding.