I do see where you are coming from and understand that many factors could affect the sound of the fully built system. I was just wondering “hmm wouldn’t it be good if people could hear how it sounds like while it’s working?” as there were a lot of praise on how the M45CHW servos are quieter.
I think something with not too much frill such as the one in https://discuss.eroscripts.com/t/review-silent-sr6-from-aliexpress-how-quiet-can-it-be/149037?u=stillhorizon could also provide people with some sort of idea on roughly how it sounds like.
do take a look however if you think its worthwhile to do a comparison video, this is definitely not a high priority item.