Archive? No, I personaly wouldn't trust them. As backed up WORKING disks maybe, but I only trust Taiyo Yuden, and perhaps some MKM and MCC codes. (Newer MCC codes are sometimes actualy produced by CMC Mag if I'm not mistaken though.) This confusion about who actualy manufactured disks with codes we USED to trust IMPLICITLY has lead me to only using Taiyo Yudens for archival disks though. There's no telling what the shelf life will be like for anything else these days IMHO.