Can't seem to find many 4x DVD-Rs around these days. According to the manual 8x discs aren't compatible with the E85 and I've found dubbing to them an unpredictable experience. It rejects the disc to before the dubbing counter reaches 1/100 and sending the Panny into a long Self Check before rejecting the disc completely. I've had this with Pioneer, Sony and Imation discs, all of which performed fine in 4x mode. Any ideas? DVD-RAMs are fine and machine has been a solid performer in all other respects.