I was able to play around with different brands of the mirrorless cameras and like them all, but the Sony brand seems the better camera. I had only connected Sony with TVs, Blu-ray players etc. but they make a excellent camera.
You mention the noise or lack of and there is very little noise as you stated which would make it excellent for weddings and social events where noise has to be held to a minimum.
The salesman took the lenses off the Canon, Nikon and Sony to show me they all have a different size sensor.
The Nikon and Canon was the smallest with the Sony being quite a bit bigger. It showed in the pictures with the Sony being noticeably better.