I was having some VSO problems burning DL DVD+R from Image Files (Iso) via the Write Data function. I did not have any such problems with SL.
So I downloaded ImgBurn and started getting familiar with it. At first it seemed a bit complicated but then I was able to peruse some online user guides and learned how to do what I wanted. I am now able to use DVDFab Clone method to create an Image File and then go into ImgBrun to burn the DVD+R DL without any problems whatsoever.
So for DL, I’ll stick with ImgBurn. I’ll probably even use it for SL since you can visually see your burn progress much more than just a %. But everyone has their own preferences. Since ImgBurn is free, why not download it and see for yourself which you prefer.