Just tried out the racket. My normal racquet is the MP-1 90, customized to about 13oz. Obviously the O3 is too light for me but it still played very well. slight twisting on shots because of the weight but like the TW review said, power is there when you want. However, I wasn't trying very hard to keep the ball in. Control was quite good. The sound coming off the ball is a thud, not pingy. I prefer this. overall, I felt very good on my groundstrokes, w/o fear of hitting out. Playability was surprising.