I've just finished building the frame for my cnc machine, and now need a set of 3 stepper motors, and a good but cheap controller. Does any one know what sort of spec i need. I have seen 4 nema23 motors for £35 i think i will be buying them. Could anyone advise on a good controller. The motor specs i am thinking of using are:

Rated current 1.2A
Holding torque 0.314Nm (3.2kg-cm)
Rotor inertia 0.55kg-cm2
Detent torque 0.0492Nm (500g-cm).
Output shaft 6.3mm dia x 19mm long
4-connections flying lead 115 mm long

ARE THESE MOTORS SUITABLE, IF NOT COULD SOMEONE ADVISE ON A SUITABLE MOTOR.