Sorry should have been more specific
Was talking about this being the original guide
gnipsel.com/linuxcnc/uspace/linuxmint19-rt.html
gnipsel.com/linuxcnc/uspace/linuxmint19-emc.html
Like I said I'm a Linux newbie, my google fu leads me to believe
This guide
gnipsel.com/linuxcnc/uspace/linuxmint19-rt.html
uses Ubuntu Bionic as the package base
vs
This guide
gnipsel.com/linuxcnc/uspace/debian9-rt.html
uses Debian Stretch as the package base
Without diving too far into the Linux hole and getting distracted it appears that Ubuntu is aimed at being more user friendly. Myself, and I dare say others are looking at LinuxCNC to see if it's a viable alternative to either trying to keep old hardware alive to run Mach3 or shelling out for a Mach4 license.
If we ignore the install steps, is there likely to be any performance difference between Ubuntu Bionic vs Debian Stretch for someone that is only planning to use it for motion control ? Is one more / less likely to play nice with newer hardware ?