Yeah, I'm bumping in old post.
I bought a stack of M-Disc blanks for testing, as they're now available in Microcenter for a decent price. (Not sure how long Microcenter has had them, but I'd not seen them there a year ago.) There's a new LG burner in a new ATI AIW system that I'm building.
Some very important projects are being restored right now. When those are done, a second master copy will be burned to the M-Disc, then tested long-term with a full battery of tests.
This is my idea of fun.