Choosing the Right Stepper Motor

[Frank]

Hi everyone.

I'm building a CNC but I'm not too sure about some things and I need help.
I bought 3 DRV8825 stepper modules, got my code up and running, and tested the system with an old Nema 17 stepper I got from an old floppy drive. The problem is that these motors are pretty weak and I want a stronger and more suitable stepper motor in the final build.

I'm considering 2 or 3 stepper motors but I don't know which one will perform better in terms of accuracy and efficiency. Essentially I want to CNC PCBs, as well as common cutting pieces like wood and aluminum. So it requires good accuracy.

Which of the following engines is the best? (Using DRV8825 driver)
1. https://www.oyostepper.com/category-6-b ... Motor.html
2. https://www.oyostepper.com/category-7-b ... Motor.html