The software from the ISP is very poor - ISPmanager. There is a glitch in ISPmanager that still hasn't been fixed - during backup, everything is written correctly, but ISPmanager screams about errors. Some scripts don't work on it - on one server with exactly the same setup, ISPmanager has a script that doesn't allow login, while on two CPanels, everything works fine. In ISPmanager, you can't set unlimited traffic - it will always be capped at 10,000,000; you can't create more than 1,000 email accounts, 1,000 domains, or 1,000 subdomains. In general, I switched from ISPmanager to CPanel. I don't regret it; I was originally on CPanel, then switched to ISPmanager, and then back to CPanel again.
