Just played with it for 1.5 hr. I'm an all-court 4.5 player with fast long strokes. It's more powerful than I thought it would be - almost the level of the Pure Drive. However the power delivery feels more linear than the Pure Drive. I've been playing with a Prostaff Tour 95 in the past 3 months and am looking for more power. I had the RDX strung at 58 lb with Gosen Micro JC 16g. Spin is awesome. Stability is pretty good for a racquet of this weight. The key is to stay fairly close to the sweetspot which feels small and lower in the head. If you miss it I found it to be not too forgiving,with shots going a few yards off the intended target and power dropping off a bit. I could also feel the head twisting a bit on really off center shots. I had to make a conscious effort to put topspin on the ball to keep the ball in. Serving was great but again I had to put a lot of spin on the ball to keep in the box. Volleys felt great. Sharp angles were a challenge - maybe due to the small sweetspot. Guess it will take some getting used to. I'm planning to get it restrung at 60 for added control and will try to post additional feedback later.