The CC versions split in the middle to reduce bulk. The C65MH/G uses a glass/carbon composite and a softer action to handle lures that pull hard. The other fast-action versions are suited for different lure retrieves and rigs.
In CC spinning, the S71ML/CC offers extra length for line control; the S67M+/CC remains more compact. Compare the total weight of the setup, the action, and the number of sections before making your choice. The most powerful models should be paired with a compatible reel and line.