First, I have to say that this meet has been great. It has been wonderful to meet so many friendly head-fiers. I was a little overwhelming at first because there was so much gear!!! I was able to try a lot of gear in the first day but then I got sick so I was not able to try as much out today.
Here are some of my thoughts (it is hard to remember everything I tried):
I LOVE LOVE LOVE the R10's. I tried them out the blubliss's setup: APL NWO 3.0 SE + SP SDS-XLR + R10 (balanced). I was blown away by how real these sounded (at least in this amazing setup). I have never tried anything that came close to this. Unfortunately, I will probably never own a pair unless someone wants to sell me one REALLY cheap for some reason.
HD800: I loved them as well (just not as much as the R10's) and will be keeping my pre-order. I was able to try them in very amps (including WA5 which is the amp I own and some balanced amps) and they were really good, very balanced. I am looking forward to hearing them in my setup. I am hoping that they might be the one to rule them all (at least in my setup).
HF-2: When I first tried them, I wasn't sure that I liked them. I can't remember what amp/source I was using but I was hearing some somewhat strident highs that I didn't like. But then Boomana lent me her pair for the night (thanks Vicky) and I wasn't hearing that harshness. They were quite nice in fact, leaps and bounds better than the SR-225, very smooth, maybe not as detailed as the RS-1 but not as harsh. Of course, they don't really have any soundstage (as most other Grado's).
PS1000: Liked them the first time I heard them (Drew's Cary Xciter setup), didn't really like them the second time I heard them though (TTVJ 307A + Luxman Universal Disk player). I cannot really pinpoint what I didn't like the second time around though. Something just sounded strange.
WA22 and other Woo amps: Fantastic amp, I loved it. I still liked the WA5 better though. I tried most of the Woo lineup. It was the second time I heard the WA6SE and it was still fantastic. If anyone wants a ~$1000 amp, this is the one I would recommend. I tried the WA2 and did not like it as much as the WA6SE but this is probably because of the type of music I listen to. If you just listen to classical, you may prefer the WA2. I assumed that the WA22 was a balanced version of the WA2, because of the name, so I was pretty surprised on how much more I liked it than the WA2. However, after talking to Jack, I learned that WA22's circuit is closer to the WA6SE. Anyway, I really liked the WA22. Jack had his new DAC+Digital audio player prototype hooked up to the WA5 and the setup was phenomenal. I can only imagine that the DAC had something to do with it. The DAC+Digital audio player looked fantastic as well. The last amp I tried at the Woo table was the WES fully balanced electrostatic amp which was GORGEOUS! It sounded very good but since I don't know that much about electrostatic headphones (I have never owned any), I won't say much more than that.
TTVJ 307A: I finally got a chance to listen to this today. I tried it with the HD800's and the PS1000's (both balanced). This amp is truly amazing and very very very transparent. If you like a bit of warmth to your setup, it is probably not the amp for you but if you want to hear every detail in the music then this is the amp for you.
More impressions and pictures later.