I've had both working on the same machine for year and a half and that is using all 6 axis's. But just in testing Mach4 only. Still don't have the full trust to let it loose on a big job to be able to walk away (as some of my runs last days). Runs smoother but has some hiccups at times.
Running ESS on the PMDX-126 board using 2 Servos(Slaved), 2 Nema-34 & 2 Nema-23 Steppers