We have a shapeoko at the makerspace I belong to. We had a harbor freight router on it and it was a bit of a screamer. We wound up getting a quite cut spindle from inventables and it seemed alot quieter. https://www.inventables.com/technologies/quiet-cut-spindle It’s alot better but it still makes some noise.
I’m haven’t decided yet what I’m going to use on my machine.