yup, they're SQ and CD-4. my only quad LP is jefferson airplane....it's CD-4 and i've never played it, i don't have the gears. i've never heard the cosmic jokers, if you like it i'll have to check out an album (if i can find a CD copy LOL). nowadays, DSP decoders sound very, very good even with 2-channel source...but nothing beats a well done true multichannel mix. the metallica dvd-A has some amazing moments in the mix that don't sound the same if simply up-sampling the 2-channel version of the album.
they still do those planetarium shows (or at least did in the late 80's), when i was a teenager we used to go see them...trippy stuff ;)