You should be asking about archival quality DVDs. They are gold, not silver, and several bucks PER DISK.
Go to a site that is involved with archiving documents (such as legal documents) to disk. They should be able to recommend media brands and burner brands.
Thanks.
I use Taiyo Yuden (gold & silver) - same brand my friend who is a Mastering Engineer in LA music industry uses and recommends as THE most accurate disk.