First of all, digital and analog are not storage or print mediums. That is loose thinking. Second, "gold super duper" optical disk has been in my painful personal experience less reliable than negatives. Third, choosing a print media based on longevity is, I suppose, a fine choice if you are preserving some anthropologically significant piece of culture. I have no illusions that my work will be of any significance in the future, and if by some bizarre twist it is it, will last far longer in it's current form than it needs to in order to be curated and preserved. The whole idea reminds me of a couple of guys arguing over how to split up the millions that a new half baked scheme is going to make them in the future. To my mind the whole chest pounding hooting SALES PITCH about "archivability" (pretty sure that's not a word) is as some guy once said, a tale, told by an idiot, full of sound and fury, signifying nothing. Since it's up, that's my 2 cents, YMMV and some will disagree. Oh, and digi vs analog is not something we really do here, so I need to close the thread, and put myself on my own ignore list.