I have been using Petr Korbel and Sriver FH and Sriver FX BH. I would like to change the rubbers to something slightly faster but with more speed and good control. I would like a softer version of the rubber on my backhand since when I tried to use the regular sriver on my backhand the wrist started hurting and I also like the feeling I get with the softer sponge. Some rubbers in my mind are Rozena (It is discounted at a nearby store), Mantra M and Mantra S at 1.9mm.