I bought 50 Disc Cake Boxes from Optical Quantum, Plexdisc, Smartbuy, Imation and Ridata. I recorded them all with 24GB of data on the same BD-R recorder at rated speed and read them out on 5 different BD readers. When the disc failed to read, I replaced the BD reader with one that read the BD-R disc successfully. Quantum Optical Read failed at 1GB on 2 BD burners. Plexdisc failed at 3GB and read back very, very slowly on the second reader (in fact, never did a full read). Smartbuy, Imation and Ritek successfully read twice on different BD readers.
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