MediaRange MR507 BD-R DL 6x Blu-ray Disc 50GByte (10 pieces) (Accessories)
So far I had Platinum 25GB BD blanks in use, which could be burned easily all and are also capable of running. Of the MediaRange 50GB 6x blanks I've burned 4, 2 of them are okay, 1 was fired, but can not run, 1 could not be described! Absolutely poor