Regarding "crinklyness" of neo-airs:

When I first tried one in a store, I too was put off by the noise it made. However, I eventually bought one anyway, because it was comfortable and light. What I've found is that I have NEVER noticed the noise when I'm actually using it (and I'm not one of those people who drops off to sleep immediately after getting in the bag, either). Somehow it just doesn't bother me outside of the store. Maybe because I have a pillow between it and my ears?