I love my WNNN with bamboo outers, they always look so lovely and fluffy! I think NNs are superb, DD has them on for 12hrs and will normally have at least
4 feeds whilst wearing them (yes she is THAT bad at sleeping through <rubs eyes>!) and the nappies whilst sometimes really wet have always managed to cope with it. The only 'problem' I have is that they gape at the leg sometimes, but other times they don't and I can't work out why - well I can, it's the snap-in part, without it they fit like a glove.
I have an old-style one that fits better because I don't have the hemp snap-in part so I can fold it in 4 instead of three and use a mf cloth, makes it fit much better for some reason.