First, if we are to
assume for a moment that a helmet's lineage can be established through both direct casting
and realscan:
No matter what you call it, I suspect the MR's lineage is at least comparable, if not better than the "mystery" cast. Not trying to be overly dramatic, but the mystery's dome is a huge disappointment to have gotten so close and then missed the mark. The dome alone is probably why so many folks sacrifice lineage for aesthetics and choose the MSH or another home brew. The mystery cast shows its origins partly, but its limits from its own "corrections," I think, will place it a distant second to the MR sculpt -- even considering the corrections made to the MR.
But I don't actually mind if we call it premium or not,
but I bet we
can call it a hole in the wallet.