Lol havent seen other versions. That seems awkward, especially because Loki already have so many weirdly named rubbers, which are hard to keep apart...
Btw i tested a bit around in that category of fh rubbers, switching between H3 os, rxton 9 and B2 BS and what i found out is, that i cant play the same with H3 os anymore because it is too linear. Even boosted i cant seem to get the same result and power in it, which seems logic but still kinda surprised me, that it hit so clearly.
Another thing is, that lifting backspin and controlling and overall getting a clearer higher arc from Rxton 9 is pain if it is unboosted. I tried it twice with 2 different sheets and the result was the same.
I boosted once too hard (2 bigger layers) and the rubber already became a bit mushy and too dynamic for my taste. So i boosted another sheet again with 2 thin layers and the result is kinda perfect. Didnt miss a single loop on backspin.
I nearly got the same result with B2 BS unboosted, but the highend power and the harder downward hitting loops are lacking a little bit. But i do have good control and overall feeling with that one too, so i am struggling a bit with which rubber i am gonna stick. Especially because B2 is cheaper and the differences are so little that im not sure they matter at all.
Maybe im gonna test B2 another time a bit more thoroughly some time.