I agree with Bob, great post.

You list multiple significant reasons why you prefer one machine over another. You also explain that it is your opinion. You are cognizant of the fact that "one size does not fit all."

I am still mostly successful with it. I think it is because I usually sleep on my back and rarely roll over to my side. When I do, the mask sometimes dislodges when it hits the pillow. Then I have to start all over again. It is really comfortable. It did help a lot when I started wearing it lower on...

Dori,

I highly recommend getting the large headgear. In my case the upper straps on the medium were so short there was no hope of them streching to the desired length. The headgear should fit immediately. The straps on the large are much more generous.

I had a problem with the short straps so I got the large headgear. It is working out very well the past few nights. As for keeping the mask tight or loose; when I first got the mask I kept it tight but had a lot of leaks. After reading some of the reviews here, I loosened up the straps and found tha...

I had a problem with the upper straps on the headgear (medium) being too short. The Velcro was pretty much wrapping around on itself. There was no room to loosen the mask. I received a large headgear today. The upper straps on the large are several inches longer than the medium and work well for me....