Some of you may recall I had a serious addiction to Poly Polar and I felt dissapointed when I learnt here that Topspin is not going to be making it anymore. So, I decided to give their latest product a try, Topspin Cyber Power. My initial thoughts were that it's soft, but not as soft as Poly Polar. I, also, thought it was more powerful than Poly Polar and in a crispier kind of way, too. However, I wasn't convinced this was the string I wanted to switch to. Having said that, I decided to stick with it for a while and wow; it's really grown on me. I've managed to exploit it's best characteristics; mainly, it's great power. I, still, think it's not as soft as Poly Polar (no poly is, imo), but, by stringing it lower, it gets close. Cyber Power's tension retension is way better than Poly Polar's, but that's no surprise. I think spin is better, too. Edit: I, still, think Poly Polar is special and that Topspin will just reformulate it or something.