Although this thread seems to be quite dead, I wanted to ask you which formulas you generally use? Is it important for you that they are organic? I usually buy the ones from Holle (from: https://myorganicformula.com/collections/holle-organic-formula), since my little one seems to quite enjoy it. Before that we tried the one from Hipp, but he kept spitting it up, so we switched to Holle and now it seems to be fine. What do your little ones like the most?