Welcome to the site.
"Life Series" Verbatim are not Mitsubishi media, but rather CMC or Ritek (almost purely CMC), which is already listed in lower non-archival classes on our review. See that here:
Blank DVD Media Quality Review
You can still find the good non-Life/non-Value Verbatim-branded Mitsubishi (MCC) media online at the link on the guide.
Amazon and Meritline both carry the good discs.
If you have more questions or comments, please do continue here on the forum
-- and not email, which is slower to reply.
Thanks for writing.