Hi, for my PC, I've got an SB Audigy 2 ZS, and just upgraded to a Logitech Z-5500. The Z-5500 has analog surround input (front, rear, center/sub) as well as Coax and Optical audio. I want to get the best sound quality possible, would it be better to use the analog audio from my audigy? Or to use the onboard optical audio? The MOBO is an asus Ai lifestyle, which has some puny little sound max processor...
Thanks for the help.