My perscription pressure was actually written as 8 - 10. They started be out at 8 and gradually moved me up to 10 over several months time. 10 is what the doctor said was the best pressure for me based on the sleep study.

I have the Opus 360 Nasal Pillow CPAP Mask with Headgear. I love it. Stays off the face and the hose is attached with swivel technology for those of us that turn in bed. This one was recommended by a friend who told me he had tried a lot of them and this was the best.