This is the best rubber I have tried using with the plastic ball which is much slower than a non-plastic ball. Previously, I used Stigas Airoc which I find good too but lacks some power compared to Alhelg. This rubber had a harder sponge than say, C1 which I have used as well. But it wasnt that heavy which I find appealing. I also find it great for looping, chopping, and counter-looping with the plastic ball. So if you want a rubber that has more power, speed and spin with plastic balls, this might be the rubber for you : Enjoy!
Mike