Im not interested with 90K, never own one.
I bought 98K because the color looks nice and luckily the feels is good.
4pcs 90S 3U5
2pcs 98K 3U5
Perhaps the best racket victor ever made
For you which has more solid feel when smash? i already sold my 90s 3u because of the smash not really feel solid for me..is it 98k have that solid feel due the stiff shaft?or maybe because of different frame type?