I am getting ready to build a new system and have been pricing out parts. I found a MoBo that I like both with and without Audio Mobo--Asus P4B266-C. What I am wondering is should I get the sound card I want (Santa Cruz) or should I just use the onboard audio? I am also getting the Logitech Z-560 speakers so I want this to sound great. Thanks all again for the great advice. 