Hi. Could anyone give me feedback on sizing of the respronics comfort gel mask. It comes in 4 sizes: sm, med, lg, x-lg. I currently use a small with a resmed qautro mask-which come in three sizes. However, I am not sure whether go with a small or medium with comfort gel since there are 4 sizes to ch...

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Two questions. I know the difference between Bipap and Cpap However, do all auto bipaps adjust pressure immediately at the moment when the user is having an apnea? I know at least some do. However, I did not know whether that is limited to certain Auto Bipap models. Second question: I use a auto Cpa...