[Observium] Linux distro

I'm building a new box to replace my ancient Observium server. I'm most comfortable with CentOS, but most of the help docs I've seen appear to be geared toward Ubuntu. Is there a great reason to go Ubuntu over CentOS? Or is there another distro that is better for Observium? I stayed away from Ubuntu because I didn't care for the GUI, but I realized I have probably spent less than a hour per year in the GUI of that machine.