I've played with nSix-Two. Presumably nSix-Two and KSix-Two are pretty similar. The nSix-Two was too light in stock form. I like light rackets (sort of 320-330g strung), but even so I think the nSix-Two was too light (because it was a bit below 300g strung). I had to add a lot of lead tape, which practically changed it to a different racket. But if for some reason you like to play with extremely light rackets, the KSix-Two may be a good choice.