Quietest cpap with battery backup?

I'm looking at small cpaps for traveling abroad, but so many of the reviews mention how loud they are. Some say the machine is whisper quiet but the air traveling through the house is very loud. Since I have a roommate, I need one very quiet. I use the ResMed Airsense 10 and it is very quiet. Thanks for your help.

Go to cpap.com. You will find pics, specifications, ratings and reviews.

Hi!
Is the ResMed Airsense 10 the absolute quietest one on the market?

I was just diagnosed last week with sleep apnea and I’m really apprehensive about getting a CPAP machine!!

As I said on the other thread, I have use both the Airsense 10 and Airsense 11, and the difference in the noise level between them, if any, is undetectable. I can barely hear them when they're running, and the little bit of noise is white noise, which I think is unlikely to disturb sleep.