I installed 3gm weights at 3, 9 & 12. Very stable w/ noticeable pop + speed when returning volleys behind the kitchen line. Shoots like a cannon when you hit the sweet spot while driving. Ball Spin- indoors, no extreme jumps off the floor laterally, but, my opponents frequently had a hard time returning the ball. Control- I need more time to adjust to this new paddle since I keep missing both baselines by a few inches. Excellent vibration damping!