One of the things I like, too, about MX is that it is, in effect, sort of a semi-rolling distro. By that I mean while it remains based on the current Debian stable release for rock-solid stability, the MX developers routinely update the included software so you aren't really stuck with outdated versions of software. So you get the stability of Debian stable and more updated packages. And, if you like, it is so easy to pull something from MX Testing repos or Debian backports through the MX package manager. I use a lot of things from MX Testing, and never had anything go awry. Sooner or later it just becomes the stable version anyway.
Also, the developers are very engaged with the user base on the forums. I've seen instances where one or more users have asked for a specific piece of software and, after a bit of discussion, the developers have made it available. Or it might be an update to a piece of software that isn't in Testing or in the Debian backports yet. If they decide not to update or provide a requested package, they will explain exactly why they aren't going to do it.
I like this level of engagement. You don't often get that. These guys aren't new kids on the block. They've been around for a long time. MX is a wonderful collaboration between antiX and former members of the MEPIS and SimplyMEPIS communities. I have fond memories of Warren Woodford's MEPIS project. In short, you can expect MX to just get better and better. It's not going anywhere.