I've been using a CPAP for about 2 months with P10 nasal pillows, and everything is going fairly well - I adjusted to the pillows a lot easier than I expected. I have two complaints, however:
1) I'm getting some irritation on my nose from the pillows despite my best efforts to prevent it (lotion, cleaning the pillows daily, washing my face before bed, etc). Giving my nose a break for a couple days would be nice.
2) I need a humidifier. I tried without and it was unpleasant (lots of congestion). This makes battery power a lot more complicated, which is a bit of a problem since I don't have the most reliable power, and I'd like to be able to go camping occasionally. I figure with a full face mask, even without a humidifier I could still breath through my mouth (which I end up doing anyway unless I wear a chinstrap).
Does that sound reasonable? I don't know if I'd switch to a FFM all the time - does anyone else use one part time?