ANSWERED: See below, but feel free to add comments, or give your own answer too.
CentOS is a project requirement, and I'm trying to roll out a Drupal build asap, so I can focus on building out Drupal; which doesn't care what distro of Linux (or win) it's on. Problem is all the "good" guides are for ubuntu, and all the guides I've found for CentOS are not as good as the ubuntu ones. So... when I finally do the CentOS build, what are the differences "likely" going to be? (for example: package install CMDs, package availability/location, directories, etc.)
Just in case anyone is interested, these are the three pretty good "how to guides" I found:
And one on configs to make LAMP a little more lightweight: