All-in-2 or covers?

Rosie • 💍 to my very best friend. 7yo👦🏽 15months🌈🧒🏻

Ive used all-in-2 before and i like having the snap in inserts so the shell doesnt have to be washed every time...iv recently been interested in prefolds or flats with covers? Which do you refer and why? Im not due til January so i have plenty of time to research and figure it out