Gewo Nanoflex FT 48 is a great backhand rubber. I flip most receives and FT48 is a breeze in that department. Even if I switch to a push, I get good depth and spin. The rubber excels in blocking game and has enough power away from the table to keep the rally going. Serves are spinny too. I feel this rubber has good power reserves if you want to smash. I haven't tried the new Nanoflex range, but I guess it would just be a minor improvement over the older rubbers. If you are looking for a punchy rubber on the backhand and have a good blocking game, FT48 is worth a try.