All these new rubbers for 2016 targeted at plastic balls, seems to be at 42.5 hardness for some reason. Joola Rhyzm Tech is another one of those where they take top sheet and tensor sponge from elsewhere and combine them together. I think Tibhar 5q something had similar strategy. It kinda shows when you see they decided to keep the original name and just add random letters near the end like DF, Tech, VIP or update or something. Not sure would like a 42 when my ideal preference is around 45-47, plus the big 3rd generation swiss cheese pores add a different role, compared to the old outdated Tenergy's who use small pores.