As I believe was mentioned in the other thread that was linked above, I've got a number of 60s era vinyl that have been in very safe storage, unplayed, since about then. Most of them show more deterioration just from storage than the tapes I made in the 60s/70s and which have been played fairly often.

I'm not sure that vinyl is the absolute answer, although as with any process it will depend on using the best materials, and the best methods, and controlled storage.

Much has been made of the "supposed" stability of CDs, and those burned on "commercial" equipment are probably fairly durable; but the "home brew" burners are so limited in their laser power levels that extremely sensitive chemical layers must used to record the information. If they "switch" easily with the exposure given in a PC burner, then the cumulative effects of exposure to light and temperature are likely to have a - cumulative effect. Much like old photographs.

John