To me, it's the driver's ability to keep up with sharp transients.
Audeze are definitely not treble heavy headphones, like the HD700 that I have, but with proper equipment it can all balance out.
Also I want to mention - HD800 is not king.
Hifiman have a place, and I'd like to hear them, don't know where I can find them in israel.
I think I'm gonna try to get a demo with Stax to see how they compare with the LCD-3's at some point. I doubt they are as good as you people are making out of it. The fact that they are so amazingly expensive doesn't mean they are as good as that expense.
Uhm, a few more days to demo the LCD-3 and a few more to buy them.