I got some dual-layer DVD's from CD-R King for 35 bucks a pop. One type has a brownish-gray bear disc art (says "Dual Layer") and the other one has a white floral art (says "RW DVD+R DL" and "RW DVD+R DL"
)
Anyway, I already burned some documentary videos on them and I don't seem to have any problems. Having just tumbled into this thread recently, I decided to inspect these two types of CD-R King Dual Layer DVD's using Roxio's Toast 9 Titanium (which is better than that Japanese DVD Media Inspector app for Mac). Using digitalFAQ.com's
table as reference, I got the following results:
For both types of DVD artwork:Manufacturer ID: RITEKD01
Manufacturer: Ritek
Country: Taiwan
Format: DVD+R DL
Notes: Reflectivity and degradation concerns, DL has layer break issues
Rating: 2ND CLASS MEDIA - OKAY DISCS (Mixed quality media, average 75-90% of discs tend to be good. These discs are not suggested for archival data or video masters. These are best suited for data that can be replaced easily, such as secondary backups or data/video distribution. In bulk, these tend to be less expensive than 1ST CLASS media.)
All of the DVD's I made burned successfully, except for about four instances of failed verification. Maybe that's the manifestation of the layer break issues reported for this DVD.
I will ultimately have to transfer the contents to a Blu-Ray disc, once the burner and disc becomes more accessible. The files I put in these CD-R King dual layer DVD's are documentary videos, most of which are not available as retail DVD's. It would be a shame to lose them since they're really good archival and instructional materials.