I will be honest and admit here, that whilst I love my new Echo.
I am expecting Google Home to stomp over it from a great height when it comes down to actually being able to giving answers to questions as opposed to Alexa saying she can't do it, or knows nothing about it.
As I test, every time I spoke to Alexa and she could not answer, I spoke to Google on my phone and it hit the right reply every time.
Likewise, Google will pull info from other places.
On the other side, I feel they are making a long term error in the phrase OK GOOGLE.
Why they cannot understand that saying that tens of thousands of times over year/years is going to become a pain I don't know.
I am very interested to see YouTube reviews on the speaker quality, as the Echo had two REAL speakers or good size as opposed to Googles one, with some passive side baffles.
Just a shame the UK is being ignored again, for now anyway.