Hi check on youtube the velomotion magazin .they have been testing at least 6 diiferent e bike motors.With the power consumption. Etc. it’s in German. But very interesting and in my opinion the most compleet one.
My M20 front brake 203 mm galfer disc rear brake 180 mm galfer disc + 4 piston br mt 520 front& rear works very good.
I had on my previous e mtb 25 kg the same 4 piston br mt 520 brakes. And that worked also very good