Unless I'm mistaken, the media is certain to be Mitsubishi product if the AZO logo is printed on the label. Non-MCC/MKM discs are sold under a different line (i.e. Verbatim Life series) with a different product code, and you won't find any mention of AZO anywhere.
As for year of manufacture, a common observation is that older pre-2007 media (and a few would insist on pre-2005) is of higher quality. However, most of this stock has likely disappeared from shelves already, and it isn't even certain if the reduced quality of today's media has any long-term impact. Perhaps "good enough" (quality scans in spec, with the discs readable and compatible with a wide range of equipment) does the job just fine, provided that the burns are stable.