Hey everybody! I've been looking around and couldn't really find any information comparing the 8000 and 9900 directly so I was wondering if anybody has used both and would care to share their thoughts. I have used a 9900 before so I know how it feels, I just wasn't sure how the stiffness compares between the two rackets. 9900 doesn't feel extra stiff but more so than the 9000-s so I like it quite a bit. The only reason I ask is because the 8000 is about $25 cheaper =P Also, if anybody could comment on whether the new 8000 is headlight or balanced that would also be of great help! Wallace