Bummis recently came out with the bamboozle diaper, made of 99% bamboo! They are great...so soft, absorbant, and they have snaps instead of anoying velcro. Check themout if you can. They are worth it.
We have been using these as night diapers for 9 months and love them. They are very soft and very absorbent. Paired with a wool cover they are bullet-proof on our heavy-wetter for up to 14 hours!
A warning though, they do wear out fast if you dry them in the drier. If you want to use them for multiple kids then always hang them to dry. They get rather flat and not so soft after machine drying for months. Boo!