When comparing Slax vs MX-Linux, the Slant community recommends MX-Linux for most people. In the question“What are the best Linux distributions for desktops?” MX-Linux is ranked 21st while Slax is ranked 33rd.
Ranked in these QuestionsQuestion Ranking
Pro Persistent changes
Changes you make in the configuration persist if you run from USB.
Standard tar archives plus some simple shell scripting produces modules that you can load dynamically into the OS for added apps and functionality.
Pro Modern desktop
Pro Small footprint
About 200mb, but with a full KDE4 environment and loads of useful apps.
Pro Supports non-free drivers
Pro Easy to use
Pro No systemd
Pro Easy install
Pro Based on Debian
Pro Good MX Tools and Package Installer
MX Linux comes with its own set of tools called MX Tools, designed to make life easier for users.
Pro Very stable
Con Works slowly on old computers
Con Infrequent releases
Since Slax is maintained by only one person, releases are not that frequent. So it may take a while to get bug fixes or new features once you start using it.
Con Remixed debian testing
It's mainly a debian stable with some recompiled/backported debian testing packages.
Con Causes overheating on some hardwares
Other debian based XFCE distros- Xubuntu, Debian XFCE, Devuan leave small footprint on system whereas MXLinux uses too much CPU resources on same system.
Con Installer and configuration tools are different
Installer and configuration tools are different and can take some time getting used to.