I started with Dappi stuff, and their prefolds are like infant size and have polyester in the middle. THey don't hold up much and I wouldn't recommend them, but it was a cheap way to test CDs.
I ordered unbleached factory seconds from clothdiaper.com. THey are very soft and absorbent. I also have doublers for when we go out to go with them. I don't know why they are qualified as seconds, they are wonderful! DS is now almost completely in cloth. I am expecting some pocket diapers tomorrow that will be his nighttime routine from now on, good bye sposies forever

I hear great things about GMD sizing for newborns/small kiddos and I am considering of getting a dozen preemies, newborns and small each from them for the next baby (they tend to be small in our family).