My usual formula for perfect 2X dvd-r burns:

Sony DRU-500A (1.0f)
Nero 5.9.9.14
Accu 1-2X dvd-r

The problem I'm finding with these discs, is that they don't seem widely compatible with set top players. So I set out to find a more compatible disc. After doing quite a bit of research, I decided to give BeAll 1-2X discs a try. No luck at 2X whatsoever, and the only way I can burn at 1X is with firmware 2.0g in Instant Copy 7. I've tried many different firmware revisions as well as burning programs, and am having a tough time finding the right combination to achieve 2X burns with this media. I would love to be able to use BeAll or Ritek media, they really seem to have a great reputation. If anyone out there has any suggestions for me, I'd be willing to listen.