I pulled the demo trigger immediately when they were available last week. It came in the mail a couple of days ago and I took it out for a spin today. I am a 4.0 baseliner who currently plays with a Babolat APDGT+. I have a big first serve, kick second, big topspin FH, and both a 1H slice BH and 2H flat BH depending upon the incoming ball. I usually don't volley much. I have hit with both versions of the X8 and found them to be a more comfortable/less spinny version of the APD series. Slotted between the X8s and the X10s I was expecting the X9 to be less spinny than the 8s and more powerful than the 10s--sort of a mix between the tweeners and the players, offering something for everyone while not doing any one thing very well. The stiffness of 69 was not a scary proposition since I'm coming from Babolats, but the SW of 313 sounded a little low for my liking. My advice to you is this: ignore the specs on this frame. It plays NOTHING like how you think it would. Swing weight of 313, huh? A feather in the hand, right? WRONG! Was it easy to swing? Yes. But did it get pushed around? Surprisingly, no! From the baseline, it really cut through the air, and I could really whip through my forehands. Did it put as much spin on the ball as an AeroPro? No, but nothing does. The thing is, though, the X9 came close! I wasn't expecting that at all! It was a great surprise! Mine came strung with poly on the low end of the tension range, which I think is partly responsible for the spin generation. The other factor was the flex of the frame and the dwell time I was getting. Wait, this frame has a stiffness rating of 69, right? IGNORE IT! It might be a 69 in the throat where it was measured on an RDC, but the hoop felt like it had plenty of flex. It was not a noodle like a Radical or EXO3 Tour, but it didn't feel nearly stiff enough to be a 69. That little bit of extra flex kept the ball on the strings just long enough to really spin shots in. It also helped provide great directional control and touch. My BHs were average, but as long as I'm not making errors of the BH side, I'm doing well. My favorite shot, the inside-out FH, worked well. The greatest spin test for me is the ISO FH off of a short ball in no-man's-land. If I can step 6-8 feet inside the baseline, take a 100% cut at a ball, and still put enough spin on it to keep it in, the racquet passes. This racquet passes. Sadly, this is not a perfect racquet--there is no free power to be had like with tweeners, but that's okay. Put-away groundies and serves lacked the rocket power of Pure Drives, so I felt like I had to do more work to win points. Given the control the frame provided, though, it still worked out well for me in the end. I never felt like I had to dial back my strokes, and I always felt like I could hit out with confidence. When I came to net, I thought the frame had great touch. While serving, there were no big first serve bombs, but instead, I found great consistency with heavy first serves and good kick on my seconds. Overall, it served as well as my APDs. Being a Volkl, it was a predictably solid, comfortable hit. The black/orange glossy PJ is nice. SPPP or any black string would look great in it. In summary, it's less of a compromise between the X10 player frames and the X8 tweeners and more of a hybrid, taking the best elements of each and combining them into one frame. The specs are also misleading--it plays like it has a swing weight around 320-325 and a stiffness around 66. It reminded me a little of the discontinued Prince Ozone Tour. If my 2nd and 3rd times out with it are as good as today, I think I'll be adding one to the bag. Great job, Volkl!