I am using shared hosting and have used cPanel for several years now. I have just decided to upgrade to a private server and the host is saying that the default setup uses ISPConfig 3, and if I would want to change the hosting plan to include cPanel would need to pay double the amount. The new server has CentOS and I need email, database and PHO functionalities. My question is, should I keep the ISPConfig 3? is it functional, or should I stick to cPanel and pay the difference?