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Title: Excellent if you use a Plextor PX-B940SA
Review: I have a Plextor PX-B940SA Blu-Ray burner and I have not had one coaster using these discs. They also are rated at 4x but my Plextor burns them at 10x speed. Even at 10x speed I've had no problems burning or playing them either on the computer or on my blu-ray player which is an Oppo BDP-83. Picture quality is great.
