I purchased a DWU-18A just recently.
I've had tremendous difficulty to get it to burn on either + or - media at > 4x.
I previously had a Liteon 811S and was able to burn a consistent 8X on Imation 4x +R media. The Sony cannot exceed 4x.
On Verbatim - media, it can only reach 4x too.
Does anybody know what brands of media this unit can burn at 8X on?
Any help, greatly appreciated!