When comparing OS X Mavericks vs RebornOS, the Slant community recommends RebornOS for most people. In the question“What is the best desktop OS?” RebornOS is ranked 20th while OS X Mavericks is ranked 38th.
Ranked in these QuestionsQuestion Ranking
Pro Battery optimization
There are many features that improve battery life, such as App Nap.
Pro Great if you don't like El Capitan and up.
Relatively fast and retains many design decisions of the OS X of old.
Pro Memory compression features
You can have a lot of things running yet have plenty of memory left.
Pro Free if you have Snow leopard or Lion
Pro Very tweakable
There are many things you can still change through the terminal.
Pro Still supported so far
Pro Antergos with more desktops
Pro Highly and Easily Configurable
You can easily choose from a list of browsers, desktops, office suites, etc, all from the installer.
Pro Good Repo
Reborn's dedicated repo has some extra packages that are difficult to find elsewhere, in addition to the official Arch repos, community repos, and the AUR.
Con Outdated OS version
No longer supported by Apple (neither bugfixes or security fixes). The last release was in 2014.
Con Slower compared to previous versions
Con Very hard to find
Apple is very keen to only show the latest version.
Con Can't delete base applications
Con Looks nasty, and slow
Crashes every time when trying to install.
Doesn't even install it in virtualbox or VMWare.