Sorry for my English! hope that I understand. I'm from Argentina,'m playing with an open npro does something more than 6 months and bought the kpro open. I have the 2 bats and feel some differences. I want to know whether those who have used the open npro feel the same differences that I open with the kpro. 1 - npro open the more solid feel, has no head of the racket so light. 2 - npro has more open feel. 3 - kpro open fired the ball less. 4 - the open kpro is more crisp 5 - with the kpro open does not feel the ball when hit the ball with force. Actually I've noticed that are different rackets 2. I can not say that they are similar. In this racket in particular I'm not sure that technology has overtaken k factor nCode technology, at least in the version of the racket npro open. I think the nfoam that uses technology nCode is strange in technology kfactor. that you think?