We looked for a few months for a microwave that offers a feature to turn the sound off. We gave up and decided to purchase this Samsung microwave because Samsung is reputable in our experience. We got our microwave home and then noticed the sound feature and joyfully set it up for no sound! This is a brilliant feature and not easily found. 
The only thing we would change is to make the touch control more sensitive. It is more like "push" control.