I have the Stax Omega IIs, the Denon AHD7000, and AKG 701s, and etymotic er-4(which I have modded with an aftermarket cable for less micro-phonics)
Ive just gotten the Denons, but I haven't heard anything that bowls me over *yet*. The 701s are still my favorite. (The Denons(at least with my two headphone amps, a hotrodded MF XCAN VII and my Mytek DAC) I find to be more tubby in the bass, and lacking the air of the 701s) but.. my 701s took a very long time to settle down, so Ill give them another couple months.
The Lawton Audio modifications(ive heard) take the D7000s from being "ok" to something truly special, so I will probably end up going that route. I am not satisfied with them as it stands. On location, it doesn't get any better than the ER-4 due to the superior Isolation. as Piper says, they sound like they are a lot more expensive than they are.. One of my best purchases.
The Stax Omega IIs are phenomenal for classical music, but I find them to be a one-trick pony.
this thread just goes to show you how much opinions are worth .

(unreliable, all over the map heh)