Wow, that's somewhat surprising, though I've read a lot about it, quite popular. What genre of music do you listen to? Just bass-oriented bands?
One reviewer (passion for sound, I think) wasn't overly enthusiastic. "Hard to wear correctly, seal is a bit odd" and a few other gripes.
In regards to the Abyss, I never thought I'd get them. I had a fully electrostatic rig and a pair of 009s. I then heard them at canjam, from a Wa33 actually. My jaw immediately dropped. There is nothing on the market that sounds like them; the only thing I can imagine is similar in certain way is the open baffle Raals.
Anyway, while they do have great bass - they are much more like listening to a pair of nearfield monitors. They are far extended in bass and treble, and on tubes they have actually very nice mids. This is why they get the rave reviews they do.
They definitely take getting used to; they aren't supposed to seal like normal headphones. Rather you can tune the bass and frequency response by how open or closed you adjust them, and where you put the pads on. It can take some time to figure out how you like them - but once you do, you really like them.