More importantly than the disc brand, is your burning speed. If you choose a fast burning speed 8x, 16x, etc. you are at greater risk of making an unreliable DVD disc. Use the 2x burn speed. It will take longer, but the disc data will be more reliable.It doesnt matter what brand. You could us the cheapest brand name in the world and it could be the same or better than Sony or Memorex.
If the pictures are very important buy several different brands and make multiple copies, because one brand could fail just as easy as another.I've used Sony for a long time, and they've always worked better than any other brand.... for me at leastI've had good results using Imation and Verbatim DVD-Rs. I haven't tried Sony media yet but this site claims that they are a 1st class media brand.
http://www.digitalfaq.com/media/dvdmedia...Best are TDK, Sony and HP