I am starting to build a 7' X 9' cnc plasma doubling as a router 3' of z mach 3 states in it's manual that a motion control card takes a lot of the work or stress off the computer and I suspect it can help the accuracy of the motion opening up more options than the printer pins allow. This machine needs to be very accurate as it is the trial run for a Taurus gantry mill 6'x10'x42"z. So my long winded question is who makes a good motion control card that will work with mach3? I need quality not cheep.