I've had the fully grown Google Home for several months now and the whole family uses it with great ease and joy. It recognises all of our voices and plays all the music we want, first time every time. In the UK we can't quite order a dominoes or speak to virtual therapists like my friends over the pond, but I can add items to my shopping cart and then finish the payment via the stores app. our most commonly used phrases are turning Philips Hue lights on/off/different colours etc as well as firing up Netflix from on the big screen.
Last week, we added a Google Home Mini for the bedroom, first order of the day, sign in the wife so it knows who she is. Easy as pie. From then on, it gives her all the same functionality upstairs as she had downstairs - no more yelling down the stairs to the main one. Best of all - we added the 2 devices in to a group, now when you play music, you can specify the individual device or both together.
We'll be adding 2 more (for the children's rooms) at Christmas. That way I never have to listen to another Taylor Swift song in my living room again