Been using this brand since day 1.

My 3 year old would not use anything else, we are trying another style to transition to the no lid cups while home but he's completely against other sippy cups if it's not a soft spout nuk he wants nothing to do with it!

Our oldest grandson was on this type of bottle for a while. It does reduce colic and all that nasty spitting up. However, they are so expensive compared to the other bottles. But, it helped him and prevented so much gas also, which is a good thing!

Recently had to switch to formula and purchased these Nuk bottles. They work better than the more expensive brands which I have at home and received free from baby shows. Would rather purchase these than keep the ones I got free.