Alexa vs. Google Home vs. Hong Kong!

Has anyone got an Alexa, Google Home or other similar device set up in HK? Is either better adapted to life in HK? For example, are there any third party services better integrated in to HK than others? I know you can get Domino's Pizza deliveries in the US but not sure if anything similar applies here. How good are they with telling you about the weather here too?

Any other thoughts or experiences with such devices, please share!