Jerry-

I don't have the technical knowledge to answer your question about the multiple-copy machines. Sorry.

I think I made some notes from some articles on this subject of CD longevity not all that long ago- question is can I find 'em in this midden.

I DO recall from one of 'em that "Mitsui Gold" blank CD's were recommended as about the best for longevity in the home-burned class- but don't know if that info is still current.

I'll dig around, but if I don't post something in 24-48 hrs the search was unsuccessful.

This is a hot issue in the digital photo archiving area as well, as you might expect, and as I recall - again, my memory ain't what it used to be and probably never was - there were recommendations of using a high-end hard drive 7200RPM or better- for long-term starage.

Best,

Greg