Having now tried Rakza Z, GT, GTPS, (un-boosted), various H3 N’s, various Battle 2’s (boosted & un-boosted) D09C, H8 (un-boosted).
personally, I think that Rakza Z feels the best, (so far!!) it has good tackiness, good speed, not too much catapult effect and great spin.
boosted Chinese rubbers...