I recently picked up a Decware CSP2 (2 watts of OTL tube power), and I'm somewhat at a loss to decide on a pair of closed phones that are "worthy" of it. I'd love to go with HD600s/HD650s, but I have a feeling my officemates will hoist me by my own headphone cord, so to speak...   If you...

Hey there!   Hopefully this weekend, I'll be picking up a DAC-1 USB and can get to picking out some headphones to go along with it :) I'm thinking a pair of modified Fostex orthos, as I'm limited to closed cans. Given a budget of $500, what would you guys recommend? Alpha Dogs? Paradoxes...