I have a few google assistant devices at home. I tried alexa and siri but i think google assistant is by far the best one. That doesn't surprise me since they can leverage their search engine results to get all your questions answered.
Most of the time i use it for domotica. I can turn on my ventilation system at home with my voice.
You can make most electrical devices voice enabled by installing a wifi switch like this: https://amzn.to/2EDxD6x
