First, I made a few audio cd type engravings, and these discs do not work on all of my readers ... Then my bill is that I already own CDs Verbatim DataLifePlus, and that there is a mention of "DL +" on the CD that I do not find here at all (more if I look through the CDs of this bundle I can easily read text on my screen while actually my CDs featuring DL + mention are clearly more opaque ...). While base CDs? or DataLifePlus? It's simple, the CDs of this bundle do not mention or DataLifePlus Azo, which is a bit disturbing see the product description. So these are standard CDs Verbatim.