The Mitsui archival gold discs (marked as "Prostudio" in Europe) are designed to be burned at lower (1-12x) speeds, whereas the "non-archival" equivalents are apparently optimised for higher burn speeds. Not sure of any other differences.
So if that is the only difference....then what's makes the Gold disk markedly better (archival) than non-archival? Or is there no real big difference regarding the longevity, stability etc?
Director of Preservation