I'm a 4.5 good all around game based on consistency and topspin game with western grip. I saw this racket and liked it right away, I guess it had to be my new rackets. I bought 2 of those sticks, the shop strung them for me one with Yonex Super 850 (58/56) and another one with Poly Tour HS 1.25 (53/51), string job and strings for free. So far I like more the one with HS, really superb control and accuracy, easy to play, nice feel (I don't know if it's the racket or string or both) a little stiffer than I'd like at this point, great topspin, I am very pleased with the balance between control and power. Sweet spot is really huge. With the 850 string, it is almost too powerful and very soft, I'm not digging this softness and control offered with this set-up. Everything else is great. I'm thinking about either doing a hybrid or lowering the tension with HS anther couple Lbs. I think this is a better racket than RDX 300, even though is not supposed to offer as good control, so far I like the Xi 100 better. Anybody else using the Xi 100?