well, do you want stereo? virtual 5.1 or 7.1 surround sound? or true 5.1 surround. yes, there are some companies that put 5 speakers in each ear piece that are connected via some type of tube system, that run to the correct positions in the ear. I really like my razer carcharias (sp?). pretty good sound field for being stereo. i also really liked the steelseries 5hv2 stereo and usb. the usb version comes with a usb sound card that has virtual surround sound. but you can also use it as a stereo headset. ive never used any of the better logitech headsets, i think most of those support virtual surround sound. however, you could also, buy just a pair of stereo headphones and use a desktop mic or find a way to mod the phones for a boom style mic. the only reason i suggest this, is because of the better sound quality and depth they provide. here is a good article on the audio technica ad700 hope that helps. have a good one!
Buddha