I can only sort of speak for Genextion, but that one is pretty damn fast. From what I've read just now, the S-CZ is apparently a bit slower than the Eto Blade, so that might help out a bit, but I personally find myself overshooting quite often, especially on the forehand. It is viable on backhand, but for forehand you do need to be very confident in your ability to handle speed. Spin and the rest are good, it is a good rubber, just a bit fast for me. Mind you I do have a minor case of major skill issue, therefore I'm not the best reviewer, so you can take it with a grain of salt. I don't know how it is where you're at, but all Tenergy rubbers are around almost 4/5ths of the price here, too.