Many people here have been saying google's AI is eons ahead of SIRI - I beg to differ - Ai is, as Google's own CEO said, in the very early stages. It's crude, inconsistent and inaccurate. Currently no company has a lead on AI. I'm finding SIRI to be noticeably better. "Her" voice recognition has vastly improved - I can now talk in a "normal" tone with her. These home appliances remind me of the Wii - it was fun for a game or two but quickly became boring. How often can you ask it who the president is? And what happens when it's not with you (or in every room)? My phone is always with me and with the new stereo speakers on iPhone 7 I can hear SIRI very well.
Your better experience might only last until you change iOS devices.
Apple's privacy policy prevents its computers from associating its knowledge of our particular voice with more than one device. That per-device policy alone makes it more difficult to use Siri across multiple devices.
Moreover, when we buy or have to get a replacement, or we turn Siri off/on, the association between that device and whatever Apple's computers have learned about our voice, is lost.
And then Apple's computers have to relearn our voice again.
This is where having central per-USER voice learning like Google does, far superior. And it shows in real life usage, in my experience.
I find (so far) Google's assistant (and hopefully home) more advanced when it comes to contextual conversations and information. YMMV