I'm trying to get my head around something new everyday, and trying to decide which to buy. Today is bottles. I know I want anti-colic, and it's between the classic Avent newborn or MAM self-sterilising. I've fallen in love with the MAM range, they're so pretty, and the teats look fantastic and realistic. The Avent look completely the opposite - but my worry with the MAM teats is that baby would become fussy with any other design or shape? Whereas the Avent are a very much normal, run of the mill shape. Secondly, is it worth getting the MAM for the self-sterilising function? and then not buy a seperate steriliser? There's also the Avent and Tommee Tippee closer to nature brands, but I don't want to confuse the situation any further! Lastly, how many bottles should I have? I was thinking 4 small (125ml) and 4 larger (260ml) - or more?