Im looking for racquet, that can improve my game - my wrist is not the fastest and strongest. I prefer doubles - the racquet should be lighter and good manuverable (i prefer well balanced - not so much head heavy). I can buy here racquets from yonex, victor, babolat or carlton. Any suggestions for a racquet ? with my old Yonex ISO VF 76 i cannot generate powerfull smashes. I am good defender in doubles and can play delicate netshots and drops with good control, but cannot play a right killer-smash.