So I went through Victas V > 15 Limber and it is a bit soft for me. Gewo Nexxus EL Pro 43 also a bit soft. I am surprised because the sponge is harder than my favorite BH rubber right now, Rakza 7 soft.
Somehow Rakza 7 soft has this catapult effect that the Victas and Gewo rubbers do not have...