For 'cutting edge' software, Debian Sid is the way to go.
If one has not experienced it, please do not make assumptions simply due to the connotation of the word "Unstable," assuming one has to reinstall every two weeks. Granted, a reinstall of the OS may be necessary once in a while due to software bugs, but life on the edge has its costs.
My progress in Linux went from Jaunty Jackalope to the antiX 'Luddite' to aptosid, which became silduction.
AntiX, being a true Debian distro, uses whichever Debian repository the user desires, including Sid. So, the choice has always been there.
From there, I went to Salix, which I had been watching since its development. Salix devs came up with slapt-get, which operates like APT, the Debian package manager. Which, coupled with a long-held desire to learn Slackware, is most likely the reason I gravitated to it. And, once set up, it just works! I am glad to see it and Slackware back on the shelf for Linux users after a lengthy hiatus.
I tried Nitrux without success, as well. I will continue to explore new distros but feel more than enough distros exist that are based on Shuttleworth's baby.
As to devs not answering valid questions regarding their distro, LMDE devs blew off one of my questions regarding a version based on Testing several years ago. This was even though I posted the question in the Mint Forum itself.
Use what works for you, personally. But if cutting edge software is desired, use the Debian Unstable repos, IMO.