I'm really interested in starting this, but I have a few questions. I really like the one size and pocket diapers, Do they both need inserts? and do you have to wash them after each use or just change the insert? What kind of inserts work best? Does the diaper leak out every time baby poops/pees or are they basically like reusable disposables which can last more then one pee before "full"? What all would I need to get started?