Thanks for sharing your husband's story and your experience with his CPAP machine. I'll have to make the appointment to go visit the sleep clinic store that sells them that my insurance covers. I'll ask them to turn on the models so I can hear the noise level of each one. I'm 49, so I am a VERY light sleeper. My REM stage 1 sleep is dysfunctional for genetic or hormonal reasons and lasts twice as long as its supposed to. I can achieve the other stages of sleep ( all stage of sleep add up to one 90 minute cycle, then each stage repeats itself). I just take longer to get to stage 2 of sleep and fear that a CPAP will make it impossible for me to sleep. I live in a tiny studio apt so I every noise inside it is magnified by 10.