I use gamevoice also... however, the cheesy headset/mic that they sold with it sucks bad. So I bought me a Labtec headset/mic.
Headsets allow clearer vox and sound for me, aswell as appeasing my sleeping wife in the next room.
However, when I want to annoy my neighbors, I switch to my stereo speakers, turn up the volume, and launch a formation of Lancasters. (I live in a 4 -story apartment building... you can hear the reverbs all the way down in the basement when I do that.

)