Nice new word, "pre-coastered".
I had about 150 AML which were sold as.. SkyPro, I think. (Don't they have any respect to the word "pro"?)
Being a coaster is acceptable. But the worst part of the story is.. after a year of its burn, they don't spin smoothly in my reader! I guess its weight balance is broken in some way. I can feel the mechanical vibration of my reader when it reads the AML disc. But I had to read all of them just to save the diminishing data.