Hi Chad,
I have a SuperMax YCM-30 with an Anilam Crusader II controller - it was still working - but it just didn't have the horsepower I needed to run large g-code files... so I upgraded it to using Larken Viper200 drivers, US Digital E5 Rotary encoders (installed on the shaft of the SEMco motors), a CNC4PC break out board, and - of course - Mach3. I know I've thrown more code at it with one program than it saw in its entire life with its previous owners.
Good Luck,
Joe