Whats the best blank DVD’s to backup DVD’s on?
This depends on your drive. I suggest further reading in the Blank Media forum.
Good advice given.
Maybe one of the Mods of this forum could move this to Blank Media.
The short answer is: Verbatim or Taiyo Yuden media with a speed rating no higher than what your burner is compatible with. Burn at rated speed or for 16x rated media burn at 12x.
There are many more complex answers to your question, and this subject is discussed frequently in the Blank Media Forum.