I know S-PVA is better than PVA, but just out of curioisity is Premium MVA better than S-PVA
they are both quite similar technologies really, just MVA is a tech which manufacturers like AUO and CMO invest in (under different names like P-MVA, AMVA and S-MVA), and PVA / S-PVA is a tech which Samsung make exclusively. Ultimately their characteristics are quite similar in practice.