Trading Sennheiser HD 600's for Best offer!

They're a little banged up, but definitley studio quality headphones, I've had them forever. They retail for $400. I'm interested in GPU's from both camps, AMD CPU's, Maybe a nice micro ATX case? Or mid tower. Any nice AM3+ MoBo's? Nice mechanincal keyboards? Any GTX 560 ti's out there? Lol if anybody has any delta fans that would be freaking beast. Just throw me some numbers or some stuff you dont use anymore but still have around. And yes, they're great for gaming. Thanks! :P email is [email protected] if you'd like some pics.