I heard SACD only once ... and I was really impressed. I would love to have a handful of discs of some of my fave stuff, if it's mastered well for that format.
Alas, I have a great stereo system that I hardly ever use. I mostly use my computer sound system, which is also quite awesome ... but the computer, though quiet, obviously interferes with the music ... and awesome though it may be, it's nothing as grand as my old component style system that I barely listen to anymore.
And that makes my cheese kinda sad.