Just bought the Onkyo 509 / Jamo 426 and a BIC F12. I've been using onboard audio for gaming and music and SPDIF passthrough to my receiver for movies. Since I'm upgrading my setup I'm going to go ahead and add a dedicated sound card. I have the Xonar DG in my gaming PC and it works great due to the headset amp. Would the Xonar DS be a better choice though? There is only a $15 difference but if the DG would be a good choice I'd gladly go with that again.