BTW, the only brands I would trust to supply genuine MCC003 and MCC004 is Verbatim or Mitsubishi. Any other media branded MCC003 could be a combination:
1) Old stampers that have already been used to create MCC003/4 disks and are too old to meet verbatim/mitsubishi standards.
2) Fake Media codes
3) Disks produced by CMC,Prodisk, MBI that did not meet Verbatim standards.
Thats not to say such media won't work for you, just that it is dangerous to assume that it will be as good as verbatim's disks.