i'm a heavy skype user with a long distance relationship...She bought a logitech and I bought a plantronics USB headset. I like using USB because I set skype to use the headset, and it doesn't interrupt my other audio listening. For example, I can use speakers while using the headset to hear something. When not on skype I switch to the soundcard/headphone config. I don't like mixing business with skype.
soo, I say buy a USB headset, set skype to use USB and continue to use your soundcard for everything
ordered, ah well