I prefer to use cPanet. It is having many advantages of using it-
1. Easy to navigate, colorful, and vibrant client interface,
2. Wide array of supported operating systems, including Redhat, Free BSD, CentOS, Fedora, Debian, and Trustix,
3. Widely accepted by potential webhosting clients,
4. Relatively low-cost solution, if purchased through a datacenter,
5. Various addons to the control panel, such as cPanel PRO and Fantastico available,
6. Easily skinnable, many skins available,
7. Frequent software updates.