Nice setup! Off on weekends, so 12-16 works for me.
I've got a 2 resin folding tables (6/8 foot) for folks to set stuff up on. As for headphone stuff...
Etymotic ER6i Black
Beyerdynamic DT770-250 Pro
Pimeta BB Mister X
M-Audio Studio Pro 4 (not headphone, but better than Logitech speakers IMO)
Nano 1st Gen
SB X-Fi (non elite pro)
And a fairly capable gaming system if anyone's into that. (Core 2 @ 3.2Ghz, P5B Deluxe, 8800GTX, 74GB Raptor, Dell 2007WFP [S-IPS]) My primary use for headphones lies w/ the PC. I'm either listening to Apple Lossless w/ the 580's or getting blown up in BF2142 w/ the 770's.