Let me put it this way: I went CanJam with zero intention of buying the HD-800 or PS-1000. I thought they were ridiculously overpriced and decided to invest in the Quad ESL-63s and Orions instead.
After CanJam, I still was not quite able to justify those prices.
However, I decided to sell a bunch of other headphones - ones I loved and had zero intention of selling - to buy the HD-800. I have number 960 now and couldn't be happier. The HD-800 is balanced, neutral, detailed, fast, and has that magical transparency you rarely find in audio gear. That transparency is what sold me. It is rare and I prize that quality. That's why I sold stuff to get them.
The PS-1000? It wasn't bad and I liked it. But most of its praise is of the OMGBASS! variety. If I want tuneful bass, I'll fire up the ProAc Response 2.5 clones. Which, incidentally, cost about half what the PS-1000 costs. In other words, there are less costly substitutes for the PS-1000. I like the speakers better, too.
The HD-800 is a singular product, one of the finest headphones I've heard. A few listens and I realized that it would give me things I couldn't get elsewhere - it was enough to sell the beloved HD-600 and K-501 for. The PS-1000 isn't bad, but it provoked zero emotional reaction to the music.
I almost hate to say it, but I thought the HF-2 had better balance and presentation. Buying one was a no-brainer.
As for others at CanJam, I did try the Ed. 8. Maybe it's just me, but I don't "get" Ultrasones. I don't hate them, but can't find a reason to get a pair. The Ed. 8 didn't sound special to me, especially not for its price. It had nice fit'n'finish, though. The other headphone from CanJam I'll be buying is the Audez'e orthodynamic. It sounded wonderful and is only $400. Quit a deal considering the sound quality and the whiff of transparency I caught. I didn't get as much time with them as I wanted, but enough to know.