What's better HDCD or SACD? I been looking into it and HDCD is by Microsoft and SACD is by Sony. SACD from the connection side looks just like DVD_Audio and HDCD uses just the R/L connector as regular CD. So, I'm assuming that if I run a Stereo system then HDCD will be what I need then. Am I right? What's the major differencts in sound quality beside one is surround?