Hello Everybody, I have tested the Butterfly Tenergy 80 on my forhand in 1.9mm thickness. First I can say this Rubber feels very grippy like the other Tenergy Series. I tested the Tenergy 05 and the Tenergy 80. The T80 played more soft and straight. The Tenergy 05 has got a really high bounce, so it was easy to played Topspin against Topspin. With the Tenergy 80 I had more fun in Blocking and in the Short game. This Rubber is in the middle of Tenergy 05 and Tenergy 64 it's for Players which want speed spin and Control in all ways