I find the Supermoon uppermids too ethereal, if I am to put it nicely since this is a preference thing. I remember you share the same thoughts with the Viking (uppermids being too much) so the SM could be the same in this regard. It's really a shame because I enjoyed everything else about the SM, particularly the bass and imaging.
Perhaps the CM version is slightly different or maybe I just have more sensitive hearing in the upper regions.
Did you play around at all with settings/EQ with your 1ZM2? SM is quite responsive to EQ.