I have the nasal pillows because when I had my sleep study I had a panic attack with the mask. I thought I couln't get air and they took it off. When I went to get the CPAP they gave me a full mask and I told them I couldn't stand it.They then gave me the nasal pillows and I got able to use them. Some people said it makes their nose sore but I don't have any problem with that. The only trouble with nasal pillows is that they have a tendency to slip out of your nose if you are a tosser in bed. They do not seem to be as confining as the masks. Good luck!