When I got mine I found out that Rusty Wood where I bought the gun had all the factory wood grip options as well. When I picked up the gun I tried out a few that looked promising. But in the end I found I preferred the feel of the stock grips more. And I've got fairly big hands.
The one thing I did change was to add a patch around the top on the back strap side. The curve of the rear leaves a little gap there for me and that lets the gun pivot more in my grip during recoil. The filler damped this muzzle rise and stopped it from "slapping" the web of my hand.