Straying from the OP a bit, but... While it's true that vinyl generally is more collectible, there are still some great collectible CDs out there. Not a lot, but some. Like that Hormoaning CD, obviously. Also some things that are only available on CD are defiinitely worth checking out, if one is after that music. For example, some of the John Peel sessions, like one I own of Th' Faith Healers.
Ever notice how this place just basically, well, sucks.