If lowest cost is your goal, then you should forego buying a lathe and pay somebody like Hoss his reasonable fee to cut your ball screws.

The new G540 is the most bang for the buck in drivers/BO Board. It will probably work best with the 282 oz motors.

The X3 Z axis normally uses a N34 motor however. NO one has yet found a N34 motor that the G540 can run well.

If you really want best speed, then you may have to go to a full sized Gecko driver like the G201 or G203V to get the 6A that most N34 motors require.

CR.