I was excited to finally receive the Ratio 4 after a long wait but unfortunately it was a major disappointment. The machine has a high pitch tone when it starts brewing. The placement of the power button is annoying and constantly is accidentally touched and activated when you remove or put back the basket. Lastly, when I put in my cream the coffee was too cold which when I normally do a pour over at 204 it’s perfect with cream. So it brews too cool. Also, customer service has been totally non responsive! I will be returning this machine if they ever will acknowledge my email.