I just found this Linux Journal article. I’ll be setting this up between my three computers pretty soon, and thought it might be helpful for other people who are looking for something similar. 
Unison is a great sync program, and the GUI is superb at even syncing local directories like /boot or /etc to something like /boot_sync and /etc_sync (just as an example). I like to keep track of changes in certain directories that occur from the installation of RPM’s. It allows you to see just what differences there are and revert anything problematic with a simple keystroke.
Unison is great !
I use it every day
Never lost any data.