Just bought Logitech Z-5500 Digital speakers (love'em so far) but I dont have a digital sound card so im just getting stereo sound. What is the best card I should get for these to get teh best digital/dts/ out of them? Money doesnt matter at this point. I just need a card that supports digital/dolby sound for 5.1 speakers? Does anyone have any suggestions? I Was looking at the ASUS Xonar Essence ST and AuzenTech AZT-FORTE X-Fi Forte 7.1 Low Profile. I am also running Windows 7.