and also any linux flavor is always very much secure than any other operating system
I Use CentOS for servers, Ubuntu for desktop. If you want nice, solid, stable servers in a 24x7x365 environment, CentOS, or RHEL. If you want a nice, usable, flexible desktop which can run 4 24" screens and function as a development environment, home theatre, multimedia studio and a lot more, go *buntu - and if you cannot live with the Unity window manager, try Mint linux, which is mostly the same but with a backward compatible windowing system. If you hate Win8, try it.
YMMV