I don’t know about the U.S. but in Europe there’s also TDK003 by Prodisc (Made in Taiwan) and by FTI (Made in UAE), which can both burn surprisingly well. (Then there’s also TDK003 by Moser Baer (Made in India), an older spindle of which didn’t impress me too much - I haven’t tried any recently.)
Of course good MCC004 remains the reference but I feel the gap between Verbatim and TDK has narrowed lately. Both are made by much the same manufacturers and we’ve seen plenty of lesser Verbatim batches (think of PAP6/MAP6 for example) as well.
Sorry to add to the confusion spirittoo, but examining the cakebox shape and details will tell you something for sure. Highest probability is you have the straight edge on top with CMC MAG M01 inside, which isn’t too desirable as mentioned by others already.