I have used Pioneer DVR-107 (don't know which version of firmware), but x4 no problem...x8 sometimes ok, sometime not...

yes, about 5-10 pcs in a pack with scratches...

but hardness of disc is nice...much better than Iomega... I have hit it to the floor for many times...never broken

I have now burned about 70pcs....only 3-5 failure due to inferior disc (including scratches)

I have bought 4packs (400pcs)...not bad at all at this price