best performance with plextor is in the garbage where it belongs
I am a little biased tho, just had my px712 crap out on me after only probably burning about a hundred dvds some with problems and some without........
From my own experience plextor drives are too picky with media and are not the most reliable. I just bought benq 1620 will test and hopefully get some better results.
As for settings im sure in the plextor forum u can find advice about that.