Instruct: Classify an Amazon review as either positive or negative.
Query: All coasters in my Pioneer BDR-205

My Pioneer BDR-205 burner produces all coasters with this pack of discs, every time.Burning the same files with the same burner to Verbatim discs works perfectly.I've bought a lot of Ritek/Ridata CD and DVD media in the past and never had trouble, so this is disappointing. I won't be buying any more Ridata BD media.