in reply to the sleep aponea machine being uncomfortable it doent seem to worry him and he gets a much better sleep and no more sore throat in the morning, the machine itself is silent, doesnt keep me awake. Also before, if he got the chance he would "nod off" during the day as he used to wake up tired , this doesnt happen anymore. He does have to attend the sleep aponea clinic every six months, the machine is free but the hospital engineers have to give a maintenance check annually but this is done the same time as your clinic appt.