Hi,
For those yet to decide on what controller to use with Mach4, then you should take a good look at Mach4 and HiCON (Vital Systems) as a great combination.
The system is rock solid, I can run Mach4 on the Mill as well as numerous other applications at the same time keeping the CPU continually at 100% and high disk loads and Graphics usage with no affect on the milling process.
We have been CNC milling highly detailed 2.5D images with Brass for the last month Non Stop with long runs exceeding 12 hours with TBN cutters down to .05mm radius with a very good finish, so both Mach4 V3390 and HiCON with latest drivers and firmware are processing true to the G-Code.
We have yet to try 4 Axis as Mach4 still does not display the Toolpath correctly, I am sure one day it will.
Regards,
Mauri.