Just watched your videos. You have one huge workshop there... and it looks so clean in the same time... I liked it. The lathe looks good too. In my opinion, with the Chinese stepper drivers, the motors or louder as compared to Gecko. And speaking of this, I would love to try out Granite Devices drives with stepper motors. They claim that they drive the stepper with a sine wave and I think it would make the motor run quieter and smoother. However, their drives are a bit expensive.
Dan