I choosed debian, cos it's know to be oine of the best textbased server systems. What I persoanlly like with debian, is the netinstallation.
1 CD a 180MB Download, the restis downloaded from the net, and really only the packages that you really need.
debian is easy to administrate.
Don't really expect anything like yast, it's all FIle based.
And I think due to this, I've learnd more about Linux than I know about windows. Cos all you do in Windows is Klick Yes or Ok.
With Linux specially Debian you can forget this. try looking at Config text files. aso. Thats what I like...