>>7161450zoukei has a rougher texture and can be gummy if accidentally sprayed too thickly so you have to wait longer for it to dry before working on it. in my experience pastels blend better on MSC.
the only leg up zoukeimura has is that it works better on darker resins so they'll be way less ghosting on tan skinned dolls and it wont make the color look lighter in general like MSC can.
all my early faceups were done with zoukeimura, after switching i vastly prefer MSC