Pink Floyd: The Dark Side of the Moon

I wonder how many different copies of this record I've bought over the years. I think three vinyl and three on CD now. This is a multi- layer CD, with a remastered regular CD version that sounds great, plus a SACD version and 5.1 SACD Surround Sound Mix. The 5.1 won't play on normal home DVD systems, and I don't own a stereo SACD player either, so I haven't heard either. Does anyone really think enough consumers will move into these realms? I don't know.