I have medium sized hands and my favorite grip are Nills. Hard to get here in the states, but worth the price. For G-10 grips I like LOK palm-swell checkered. I do a lot of training with both males and females, so I need the grips to not move in the hand, but not be too aggressive. The LOK checkered grips fill that to perfection, and lets face it CZs already handle recoil well.
Hope this helps.
JW