I ordered a fresh spindle of Ritek 4x DVD-R premium grade media from the same source that got my last batch. The last batch was the Ridata G04s with the Ridata logo in the center of the disk. This batch has PioData Multispeed Grade A in the center. The Manufacturer ID is reported as RitekG04 by Nero. Are these a bunch of coaster and should I send them back? I did the coaster thing with Memorex media and didn’t like it. The Ridata media worked great for me.