IMO, none, but some people like the style/shape of the Boyd's. They offer a thumbhole, a Pro Varmint that has an adjustable comb option, and Hunter variants. They do offer one of those stocks in Walnut. Can't remember offhand which one.
Keep in mind that the CZ is a production rifle that is an excellent value, but it isn't a full blown bench gun. You can throw thousands into that hole and never be competitive, if that's the goal of this project.
What is the goal...exactly?