Experienced players who like to dictate action with heavy pace and spin should like the Ki Q+5X (310g). This racket updates the Ki Q5X (315), and it comes with a slightly lower weight (for speed) and a little more mass concentrated in the head (for extra stability and power). With its high swingweight and extended length, this racket provides strong intermediates and advanced players with an outstanding combination of stability, power and spin. Players who are able to swing this stick at full speed will not only find massive pace, but they’ll be able to load the ball with huge spin. Although this racket gets plenty of comfort from its stable feel, ProKennex has given it their time-tested Kinetic Q Technology, which uses moveable mass in four strategic locations to absorb shock and transfer more power to the ball. This racket also comes with a space-age Spiraltech Carbon layup, which removes impurities and air pockets from the graphite layers in order to provide extra strength and dampening. On groundstrokes this is the perfect racket for the aggressive player who likes dominating the opposition with a heavy combination of pace and spin.Not only is the Ki Q+5X stable enough to trade heavy balls against big hitters, but it feels rock solid when counterpunching big first serves. At net this racket does not get pushed around by your opponent’s pace. Aggressive volleyers will find enough power to finish points with a band. Finally, aggressive servers will not only find a dangerous combination of pace and spin, but they’ll have the control to work the lines and corners. All in all ProKennex has produced a very fine update. This is a must hit for big hitters looking for an ultra solid racket with genuine knock-out power.