One word.... SOFTBUMS
They have elastic in the legs so you don't have to worry about how the brand fits. You just slide the inner toggle to the size of your baby's legs, adjust every few months as they grow.
They're also economical because you can snap in new inserts if baby only peed. I rotate between two covers (air out the wet one and use it at the next change) until one gets poopy. Of course during the newborn stage they will pretty much all be poopy! However you can use these same shells from 7ish pounds up until they potty train.
Poo containment is GREAT! Again because of the totally adjustable legs.
They will hold a prefold, although it's a stretch. They are meant to be trim-fitting however, which means they can be worn under tight clothes (and let's face it, almost all baby clothes are designed to be worn over barely-there disposables). I usually use their own inserts, the bamboo velour are my fave although the microfiber are easier to dry.
The covers have held up great in the wash even using super-hot cycles to get rid of yeast or bacteria fairly regularly. They also go in the dryer. Overall very easy. Bamboo inserts are a bit more fussy, a short dry followed by stretching and hanging works best for me. Top loaders can cause excessive pilling in the velour from agitation. Microfiber inserts are easy-peasy though.
They are pretty user friendly for daycare, daddies, etc. especially compared to those ones covered in snaps.
I started CD at 6 months which is admittedly after the most "liquid" phase, but I am going to start at birth with #2. I tried several brands including Wahmies, prefolds with Imse Vimse, Aristocrats longie (that one's nice), and a couple other AIOs. I thought I would like Wahmies best but Softbums was definitely the winner, now it's practically all I use.
I also heartily recommend diaper creams and other baby care items, etc from Northern Essence
. They wash right out of cloth, which is a very rare thing for creams and salves. Quite important for maintaining absorbancy.