I have this string in my 2012 Babolat Pure Drive, strung at 56 pounds. As a 3.5 player, I can't really appreciate the finer points of string, but I can say that this feel better than the loose polyester the racquet came with. The strings do not notch at all and they stay cleanly in place. I can tell that this string works well for me and I will continue to use it.