I've got the ZHP and its a good improvement over standard, feels better and the gear change is improved due to the extra weight of the ZHP over standard. There's a thread on here somewhere showing the weights of the standard, ZHP and the Storm Knob. The storm is heavier again than the ZHP which gives it a better shifting feel however I still prefer the feel of the shape and leathered ZHP. Its personal choice really, the Storm shifts better but is cold, not as nice a shape in the hand, not leather to feel and a little Maxpower for my tastes.