I like the Dr. Brown bottles because they really do help reduce gas and colic. The design is unlike many other bottles on the market that claim to do the same and they are priced similarly. The downsides is that if you do not assemble it perfectly it WILL leak. I've forgotten to put the middle cylinder in once and took it out with us and it was completely unusable for feeding the baby. Also there are several parts to wash, not loose, and reassemble and it can be more time consuming to do so.