It looks like you'll see a lot of what you want at the meet up.
I'm really hoping to find my new main cans here. Hopefully most of these will be available:
Beyerdynamic: T70, COP, but really anything from them
Mr Speakers: Mad Dogs
Denon: D2000, D5000
Schiit: MnM stack, but really anything from them, too
Here's hoping I'm successful.