If you don’t want a part of your body to get sore, then that part shouldn’t be pushing against something that doesn’t move along with it. That’s the thinking behind the vabsRider bicycle saddle, the two sides of which pivot in time with your pedaling.
Like the others comment said, if the old one is comfortable then use that, maybe lube the spring until the sound is gone. I too can’t get used to those skinny roadbike saddle, the big comfy saddle is what my butt will accept.