How can I find fast stepper motor / controller combo?

[irving2008]

Torque is proportional to current, but dynamic torque and thus acceleration & speed is controlled by how quickly that current builds in the windings and that is controlled by the winding inductance and the voltage to the driver. These parameters dictate the corner speed of the motor, below which you'll get close to the static torque and above which torque drops off rapidly.

So low inductance motors and high voltage drivers.

[JuKu]

This makes much sense, and re-reading the datasheets, matches my experiences: Lower inductance, faster speed (with teh same driver and power supply). Thank you! Now I know what parameter to look if I want to make the machine even faster.