I'm definitely a "be prepared" kind of girl, and in this respect, it will really pay off . . .
I usually use a Swift nasal pillow system (ever since I got it a month or so ago), and the past few mornings I have woken up with a very sore spot on one of my nostrils (right at the base) . . . I think it started off as a little pimple, and just was being aggravated by the nasal pillows. I stubbornly kept using the Swift, and this morning my stubbornness bit me back -- I woke up with the sore spot all bloody and REALLY painful! Not to mention that the pillow on that side kept leaking all night -- probably because of distortion due to the booboo.
Luckily, I also have a nasal mask that I can use while my poor nostril heals (should have done this a couple days ago!). It's not my favorite interface, but it will be more comfortable while my poor nostril heals!
Moral of the story? If your insurance will pay for it (and even if it won't), it really makes a lot of sense to keep more than one type of mask or interface, "just in case"!
Also in the "comfort" category . . . if you are like me and you tie your hair back while you put on and adjust your mask, it helps to take out the hair tie before you go to bed . . . otherwise you may end up with a nasty sore neck from sleeping on it all night! Not that I would do something dumb like that, nooooo . . .

