and does it have a Cpanel?

I really don't know much about servers;)

Ensim is a control panel along the lines of Cpanel. You can't have both on one machine.

Both provide point and click interfaces to administrate both individual accounts and servers themselves.

Ensim is a control panel that goes on the server. It is much cheaper than CPanel... but CPanel is better ;)

Ensim is a type of control panel, so an ensim server is a server with Ensim installed.
Check out www.ensim.com

Wow. Three answers in one minute. Nice.

I personally think that Ensim is much easier than CPanel to learn. I also like it better and would prefer it