Great to see all of you guys! I really like the HD800 too, Voltron. I don't think of the resolution and presentation as shortcomings. They might be the best headphones I have heard. But they are, in many ways, the most unique as well. Having owned the HD600, HP-1, HP-2, RS1, Omega 2, the HD800 seem most similar to the O2. Maybe I am crazy for saying that. They seem like the O2 with more "dynamic" qualities. Of course, I don't listen to headphones as much as many people here. I consider my amp a speaker/power amp that happens to have a headphone jack...
Speaking of which, here is a photo of the amp with updated iron, 5AR4 instead of 5R4W, and the HD800: