Re: how do you know when stay dry is the best?
I thought my daughter needed stay dry when we switched from disposables, since her skin wasn't used to the wetness. Turns out she was sensitive to PUL. I use mostly bamboo now with wool soakers. Made a huge difference. Now she gets red if I use disposables, which NEVER happened when she was in them full-time. I also use CJ's butter at night and sometimes during the day. A little bit of a barrier does help, like Melanie said!
ETA- wet cotton certainly irritates my daughter more than wet bamboo or fleece. OBF is my fave diaper material.