My Dad was having trouble with his Sony RDR-GX3 DVD Recorder. I didn't like the DVD-R media he was using (Datawrite Red V2 x4). So he got some Packard Bell DVD-R x1 and they worked fine. I would like to know the Spec of these discs, namely what dye they use. Are they G 04 discs? Can anyone help? I know that the Datawrite Red use infodisc dye.