I know ClubNeon isn't too impressed with SACD as a format, but he'll have to explain why. I'm still a bit too dim about the subject. I know the SACD of Dark Side of the Moon sounds amazing. I really don't know what Blu-ray would add to the sound quality, but it would make it more accessible.

SACD audio can be sent over digital connections a couple of ways. The player can either convert the DSD to PCM, or the player and receiver would both have to support DSD.