which free server os
 

hi

i'm trying to cut server costs a little and want to get away from linux and ensim. i'm not a server expert but manage my boxes ok with the help of howto's on various forums.

i want to switch my boxes to a free os and direct admin, i've looked at freebsd and i would rather use something that is a little closer to redhat linux if possible.

which out of these free os's is the most commonly used and also which is the closest to redhat and hence in my case simplest to use?

centOS
fedora
debian

thanks a lot in advance :thumbsup