Just purchased a Sonos One to replace an Echo Dot in the bedroom. So far, I am very disappointed. With the Echo dot, I could talk normally to it and it would work. I could even say 'Alexa' from outside the room and it would pick up and respond. With the 'One' I have to say 'Alexa' repeatedly, often shouting before it responds. Even when it does hear me, often the light on the top flashes for a while then silence. No errors, no notifications, no idea about what has gone wrong.
Is this 'usual' behaviour or do I have a faulty unit and should return it. Sound quality is great when it works, but for the Alexa functions, the echo dot was far superior.