I searched high and low for the same. I too run with a 7.1 setup and do not use headphones, so I wanted a mic only setup that I could wear on my head, but like you, never found anything for a decent price without built in headphones, or too expensive that was made for wireless/pro setups. I just settled with a Samson Go Mic. It's not expensive, gets rave reviews and because of it's size, can be mounted a number of different ways. I bought a cheap desk lamp with adjustable arm from Ikea (something like $10), removed the lamp housing, and attached the Go Mic to the end of it. So now, when I'm not using it, I can easily move it out of the way, and when I need it, its a simple reach and position and I'm set to go with delicious voice quality.