Intruding sorry! We have Freddie (baby we are looking after for someone) on two different types of bottles simply because thats what we had. He is using BreastFlow and Tommee Tippee closer to nature bottles. He is fine with either, he isnt fussed in the slightest which he is given but I have noted he is less windy on the Breastflow, Breastflow also takes him a lot longer and he is much more settled after finishing his feed.