I've been researching between these two cards and the only differences I found are the dolby digital encoding and the SDIF port. I really don't know which one to get because I heard the Xonar DS has a better chip and will perform a little better than the Xonar DG. I'm stuck between these cards, can someone tell me which one is the better buy? I generally use headsets while gaming, youtube, movies, (Tritton PC510HDA) 5.1's.