Hmm, I'm using Hurricane Neo Provincial, 38 degrees. Actually, I just switched to Palio Thor's giving it a spin. Not sure I like it though yet. I took me many many months to adapt to using Hurricane, but now I love it. The Thor's isn't taking TOO much adaptation, but still a little.
I was told by my coach that relatively hard rubbers are good for the forehand, but of course not TOO hard.