Mach3 vs Mach4

[birchy]

Obviously the OS is more important than the software. If the OS is unstable or unreliable, then we can't expect any software to be stable. But yes, at the end of the day all we need is a CNC controller. I guess that industrial machines use dedicated hardware and software, whereas Mach, LinuxCNC, etc attempt to bring CNC control to the layman with a spare PC in his shed. Every setup will have pros and cons and some end users are more technophobic than others. That's just the way life is.