Brand new with my CPAP machine. It is a AirSense 10. The first night i slept very well. Very vivid dreams. I hadn't had dreams like that in a long while. It seem like i dreamed the whole night. It took me some time to get used to the pressure but after a while i fell off to sleep. I used it the second night and i slept for 5 hours but it only record data for about an hour. When i woke up the machine was still going so not sure what happened there. We will try again tonight.