Previously I only used the Platinum blanks Amazon. They came loud DVD Identifier Ricoh and were 1a. Therefore, I have also issued in January a very positive review this blanks. Unfortunately Amazon now supplies under the Platinum label from blanks of Ritek. I myself have a 50-pack spindle of blanks here. 2 of approximately 10 pieces are immediately broke down when burning at 8x. A blank, I then burned at 4x. Luckily it was only a documentary on television via TV card. After 30 minutes I then unnerved pressed to stop, since the DVD only jerked and had Tonausetzer. Therefore: stay away and prefer to buy original Ricoh DVD discs !!! Ritek is really bad quality! I must therefore refer to my review from January 2005 as no longer applicable. Sorry !!! Greeting Alex