I'm currently using Arcsaber 7s. I've had them for quite a few years and they are a great all rounder. I know they are a medium flex, I was wondering if I would be better of with something stiffer. Recently there have been a few occasions where I can feel the racket flex. I know that the flex is there to help players build up power. But when I hit the shot it lacks speed and feels dud. (Even though I'm pretty sure I'm hitting the shuttle in the sweet spot.) Is it possible to be too strong for a racket so the flex becomes ineffective? I was thinking of the Z slash as a possible upgrade in the near future. Reckon that would be a good fit with the slight shift towards the head of the racket and higher stiffness?