I have tried out several
web hosting control panels (cPanel, ISPConfig, DirectAdmin), and I think DA is the best of them.
Advantages:
- Integrated DNS management for users
- Resellers can easily create custom nameservers
- Reseller statistics
- Easily installable skins
Disadvantages:
- User interface is not easily usable (but if you learn how to use it, you will like it better than cPanel)
- There are not too many plugins available