FWIW, I have an A03 with the modified firmware that allows 2x burning on all media. I purchased a few 100 cakes of DVDPro (Princo) DVD-R from Supermedia.com. I have burned...let's see...about 150 of them so far. I have produced 5 coasters now (all my fault, doing dumb things that I should have known better). Basically, what I'm saying is that this is a great burner, great compatibility with nearly every DVD player I've tried out, and I can burn 2x.
Oh...did I mention that the media only costs $0.60 each? And the burner can be had for under $200?
Sounds like a no-brainer to me. But then again I never was very smart.