epon heads ( and prob mizunos, and onoff) are the best for absorbing the extra taughtness of NS super peening blues. (NS SPB)
other NS shfats in epon heads seem to loose a lot of distance, ive tried everything............ in ns in my epons over the years and the SP blues are simply the best. plus they lower the flight a bit which helps.
other options id go for are the c-tapers , u mentioned the shiamdas, yes they wud work well for u for sure. again epon heads can make these shafts playable without pain. SYB protos are another set that wud make these heads come alive as well
wudnt really look out side that lot .hmmmmmmmmmm maybe cept or DGs200 tour issue design tuning that wud be a head turner wit hthose heads I think u just got..!