There has be a lot of discussion of which firmware - Marlin or Repetier is better on a delta printer controlled by an 8bit (ATMEGA) Arduino controller.

To this end I did my own tests:

The second part compares the latest 1.1.8 Marlin to Repetier:

The printer is the Anycubic Kossel. And here are both firmwares used in the test:\_Anycubic\_Kossel\_anycubic\_kossel

Not to spoil the “movie” but in my opinion Repetier is still better.