I don’t have review units of these. I bought both of them and they’re both useful. Both are cylinder-shaped speakers that listen to your commands.
They get their smarts from their respective cloud services. To connect with the cloud they both use Wi-Fi.
Considering their size, both do a remarkably good job of playing music and listening to you. When it comes to audio quality, neither will be mistaken for a Bose Soundtouch 20, but for what they are, they do well.
I could talk about the engineering inside each, but while that’s interesting, what really powers both is their cloud computing brains. Both are attached to your Amazon and Google accounts respectively.
If you’re concerned about your privacy, neither is a good choice.