There have been a few new postings regarding this stick, so I decided to post a comprehensive review, extrapolated from some of my other posts and new observations: My racquet is strung with Gripper at 63M/60C. The 50/50 method was used to maximize the string bed response. Just as with the original DNX sticks and the PB sticks, the Organix stiffened-up the crosses, and having it in all four poles, stiffens the mains as well. Hence, string the crosses looser and be mindful that the stick strings up tight. This is a great upgrade to the PB 10 MP. It plays as precise, but gives the response and spin of 16 mains with more plow though. It is also the most stable frame that I have ever hit with, including the 6.1 and Nadal's stick, while being far less stiff--the printed stiffness rating on most online sites are far stiffer than what Volkl states it to be in-house. Any ball contact off-center, near 3/9/12, still has a good response, without any vibration being delivered to the hand--both qualities which are very unique. It is possible that many players will not need any mods, and with the addition of the Organix at 12:00, lead tape could make the stick cumbersome. This is a very different Volkl, just as the BB 11 was a different BB stick. As other posted reviews from numerous 6.5 players stated, it feels like a 6.1 with the feel of a Volkl, but, you will not have arm problems like many do who use the 6.1. There is no vibration, even though the whole hoop is so solid, that it feels like a continuous, unbending ring is plowing through the ball, sending the ball like a flashlight in the direction that it is pointing. It moves through the air very fast for its weight, as the WHOLE head feels quick, and it feels that way both leaded and unleaded. At contact, there is no vibration transferred to the hand. As soon as the ball leaves the frame, you only feel the racquet moving through the air, as opposed to feeling the frame wobble between contact and follow-through. For some, this is the Volkl feel/feedback, because what you just did, is still resonating from the frame, to your hand, and up to your brain. The Organix at 12:00, and the Organix material at all four poles, completely changes the feel and dynamics of the ball response off of the string bed. It's a completely new feel. Be prepared to spend a little time to adjust, because the first time you hit a ball, "what the frak?" will be your first and only thought. The stick is crazy precise, whether you drive the ball or use spin, You can feel the ball on the string bed long enough to know exactly what adjustment to make on the following shot, but it very quick and crisp. The dwell time is not as long as the London's, but C 10 Pro users will feel the relationship, once they get over the feel of the stiffer hoop. PB 10 Mid users who need the bigger more forgiving head, will make the switch very easily. Leading it up does increase the dwell time considerably. After play-testing it stock, I customized it to my personal specs, which with this stick, came to 380 grams. It feels like a larger PB 10 Mid, but without the hoop flexibility that normally occurs when stick models are blown up to a larger size. When hitting flat with the the X10, and swinging slowly, you will feel the ball come off the frame very quickly as you would expect, with the famous soft Volkl feel. However, as you increase the pressure on the ball, you feel the WHOLE STRING BED MOVE in unison, backwards, due to impact, holding the ball; it's quite exhilarating. This allows you to hit a short-angle CC with a slow swing at 10mph, and the same shot with a fast swing at 50mph, to the same part of the court, with the same amount of control--I could do this on my weaker BH side. That is not what happens with a traditional graphite frame, as stiffness and flex work in tandem with dwell time. That brings a different element to the game. When hitting with spin, again, the WHOLE STRING BED reacts, but it bites the ball. It does not have the dwell time of the PB 10 Mid, nor the cupping of the Melbourne, but the dwell time increases substantially when fully leaded. You cannot have the power of a 98in2--which by definition has less plow thru than a 93in2--and still have the same dwell time without the extra weight to do so. Thus, the soft, precise, feel in the hand, is coming from either the beam shape, the Organix material, the new grip system, or the combination of any of the three. And do not confuse this soft feel with the cushioned feel of the BB 11; it can only be described as soft, cushioned, and scalpel like precise. The X10 325 really serves well, with a ton of spin. Making directional adjustments, is also great, which I attribute to the response from the Organix at 12:00. Off the ground, when you are stretched wide, the extra power coming from a stiffer head, if not also because of the cellulose in the DNX mix, allows the ball to rebound off the string a little easier. Perhaps, this will provide you with a few more SAVES--shots hit into the court just to stay in the point which have no other specific purpose--rewarding you more points or games, since, at the lower levels of the game, getting one more ball over can often elicit an error, although at the higher levels, it's just a set-up for your opponents winner. The X10 325 also performs well on low balls and short-hopped balls, which is expected due to the larger head. However, applying curved topspin or sidespin, is amazing with the X10, which I attribute to the Organix material at 12:00 as well, since you are swinging from the inside of the ball to the outside for the former, and from outside the ball to inside the ball for the latter, forcing you to lead with the tip of the head. Lastly, the word is that many Wilson 6.1 and Head Prestige users have switched to the X10 325. Many new sales have come from those players.