In contrast, the Sonos Era 100 costs $220, is one of the best smart speakers available, and features Amazon Alexa built in. Comparing the Google Home Speaker and Sonos Era 100 goes far beyond their respective price -- you have to consider sound quality, responsiveness, and compatibility. On smart home capabilitiesWinner: Google Home SpeakerThe Google Home Speaker and the Sonos Era 100 are both smart speakers, which means you can use their smart features with your smart home in some capacity. The Era 100 is a third-party smart speaker made by an audio company, not a smart home company. The Sonos Era 100 features Sonos and Alexa voice assistants for control.