I recently bought and played with the yonex vcore 100s , after reading some thoughts / reviews on the performance of it , here on TW. After playing with it i thought i would post my own thoughts. Firstly the racket came pre strung with yonex' flash yellow/green poly. The feel was horrible and the stirng bed was dead in some places, and like a rocket launcher in others. I strung it up to my preferred setup (black venom main/ spiral flex cross) at 52/54, and hit the courts for a couple hours. The performance of the frame greatly improved (suggesting this frame is quite string sensitive), as did the feel. However i feel as though some aspects have been oversold. The racket didnt seem particularly to have a lot of power. Certainly no more so than the Tecnifibres i currently use (which i dont consider to be overly powerful), and i didnt find the control to be as good. The stiffness difference was noticeable only on off centre hits when i noticed a slight jarring sensation the next day in my wrist. In terms of shot characteristics i didnt notice an increase in spin, which is what this frame is primarily marketed as. So far i havent painted the best picture of the frame, but by no means is it a poor racket. On serves it seemed to be easy enough to hit spin/flat, and placement was okay. i played against quite a big hitter, with a serve comfortably over 100mph, and didnt think it had the same sort of stability as the tecnifibres i use, but it still wasnt flimsy. At net it seemed to be easy enough to place shots where i wanted. These are just my thoughts, anyone else's opinions would be greatly appreciated also.