I had an extensive hit with this stick this past weekend. A little background: I'm a 4.5 player, 6'2", 180 lbs. I use a semi-western (4/4) forehand and eastern one-handed backhand. I play with a Volkl C10 Pro MP strung with Pacfic Prime Natural Gut 15L @ 60 lbs/27 kilos. For a while now, I've been considering a switch to a lighter, stiffer frame. The reasons have to do with how I'm changing my game. I'm trying to add more explosiveness and athleticism to my game. I have a good serve and good returns but I feel like I can and should be much more aggressive off the ground. The problem is I don't think my racquet supports that game. I've dabbled with the Babolat Aero Pro Drive and Pure Drive Roddick. At the Pacific Life Open I had a pretty fun demoing experience with the Dunlop Aerogel 500 Tour. However, these frames seem to have too much swingweight for me. The key for me right now is to hit as many forehands as I can, with a lot of spin, but lower trajectory. I'm using the slice primarily for defense and I'll come over the one-hander sometimes, but especially on anything short--I'm really trying to be more assertive with it. That means I need a frame I can whip around really fast and manuver in a flash. I was delusional a day earlier and spent a couple of hours with the Wilson K Six-One Tour 90. Though that stick was amazing for serves, returns, and backhands (both topspin and slice), it was too hard to manuver, I framed way too many forehands, and a lot of my forehands would go long because I couldn't generate enough racquet speed or create the proper racquet path to consistently hit the kind of ball I wanted to. The demo: The next day, I spent a lot of time demoing many 'tweeners. I reached for the Prince O3 Red (non-Speedport), Prine O3 White, Yonex RQS 11, Volkl DNX 9, Wilson nPro Open (standard length), Wilson nCode nBlade, Head Microgel Extreme and Extreme Pro. The Red felt too dead to me, the RQS was too hard to manuver on the backhand, the DNX 9 and nBlade were not lively enough, the Extreme Pro had too much swingweight, and the Extreme's 1/4 inch extra length was problematic. So the nPro Open and O3 White made it through the initial screening process. I decided to check out one or two more racquets. The K Factor Team and Surge caught my eye. The Team was a pretty fun racquet but I couldn't get enough oomph on my groundies or kick on my second serves with it. The Surge was simply dynamite. The frame was so light but solid. I was able to play the exact kind of tennis I wrote about earier. Hitting with a 5.0-5.5, I was able to run around and hit some huge forehands, play great defense to get back in the point and hit more forehands, serve big, and be confident in knowing that my racquet was supporting my newly evolving game. Unfortunately, I didn't have volleying experience with the frame, but the K Surge's ability to not get pushed around by big groundies or serves has me confident that volleys won't be a problem. I bought one and will be stringing it with Wilson NXT Tour 16 @ 60 lbs. My demo was strung with Wilson Reaction 16 @ 60 lbs. If you're looking to play a more aggressively, I highly recommend this frame. Don't let the K Surge's light weight and swingweight scare you off. It's a super-solid hit. Bottle Rocket, if you're reading this man, try out this stick!