I have received a email from Facebook regarding this offer.
Definitely its not good as Google hub and Amazon Echo displays in terms of smart assistant.
But this device got few other good thing like 13MP AI camera, HD screen and mainly What's app audio and video call support which the other two displays doesn't support.
Also 30 days try and return policy is there.
I don't know much about these devices but ordered a portal mini to give a try.
Mod Note: Removed Duplicate for Facebook Portal TV from the Title