Try a couple from each different sort of nappy. And don't forget your DH. My DH is not around much, but if his fav MCNs are not in the pile he grabs a sposie! (He much prefers velcro to snaps).
It's trial an error, and don't over look plain old cotton prefolds. They are very reasonably priced and I find them very handy to have around.
Good Luck.