This microwave replaces our original, well functioning unit that I would have kept if I'd known what this one was like.  My first mistake was not asking what color enamel is inside the microwave before purchase (it is black).  My second mistake was not getting a close-up image of the controls.  They are not user friendly and are backwards for most English reading people.  There are three buttons in a row:  1. Cancel/Off  2. Start/Pause  3.  Add 30 Seconds  My instinct says you have to start before you can cancel and reading from left to right makes it awkward searching for any of these buttons since they are separated between the numbers and separate features.  I can't see through the blackened window to see if tea water is coming to a boil or not.  When the vent fan is on it seems to rob the microwave of power and it take longer to boil water.  We did not get a manual and I have not found the option for cooking with a sensor adjustment.