I’m in the middle of the project, not quite to where I can answer that very well. Was just going to increase the motor voltage on the existing board, but got sidetracked. The S3 board should take ~30V and be fine. That would help a lot both with the stock steppers and the high torque ones. The high torque/low current ones have such high inductance that 20v just doesn’t drive them particularly well. For the single axis proto I did, yes, it’s much stronger. Good idea? Not so sure, more “huh, what’s this like” than any great reason at this point.