I dont have either of them but 'Alexa" rolls off the tongue better than "Ok google".
I guess. But I also find the Echo gets accidentally tripped by regular conversation or media playing on the TV/speakers. That never happens with the Google Home since, well, nothing in regular conversation comes close to 'Hey or OK Google'. And, FWIW, I use 'Hey Google'--sounds more like you're calling to get someone's attention than 'OK'.
While I already find the GH more useful, I think the upcoming updates are going to push it far ahead of Alexa, at least if you live in the Google ecosystem even a little.
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