Interestingly, I didn't have any problem with noise with the NeoAir. That's one of the few things that wasn't a problem! There is a slight mylar-type crinkly noise, but with my head inside the sleeping bag I can't hear it. (I'm still passing my hearing tests just fine--surprising considering my family history.)
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey