Another question from me about FF! I have bought some MAM bottles, I got a starter set at a very good price, so have two tiny bottles, two medium (up to 5.5 oz) and 4 large (up to 9oz). However there are only 4 "bottoms" so you can combine them, but I think I need to be able to have at least six. I am going to buy a couple more, but wondering whether to buy the medium size ones (rationale being that when they are taking smaller amounts is when I will need more bottles) or to get larger ones straight off.