Well, I did include closed-back alternatives... Alpha Dog, ZMFxVibro, Paradox Slants.
These modded T50RP headphones are almost everywhere now, and they offer some very competitive pricing. Almost unfairly so.
But again, I'm not dissing on the Z7. Sony has proven themselves capable of making a dynamic headphone that could compete at the top of the food chain with the R10. I guess... well, people really really really expected the Z7 to be a spiritual successor.
In a way, I think it is. It probably carries a part of the R10's strength (soundstage?), although there are also weaknesses.
At this point, I'm really inclined to pick one up so that I can mod it to death. I'm a sucker for comfortable headphones with relaxed sound.
But the fluctuating pricing (~$500 from Japan or $700 in the States) doesn't make the decision any easier.
I'm just afraid I'll get it, and then unfairly compare it to the HE-560, which I know is going to be heavily skewed, because the 560 is just so much better