I have been using Dr. Browns Bottles since my baby was born and they are really great bottles. There are more parts to clean but it is worth it because these bottles help your baby with gas and spit up. My daughter has been great with her gas and her spit up has been minimal.

They are a little more expensive than a regular bottle but they last and they have good nipples and I will be able to still use them with my next baby. The Dr. Browns bottles come with wide mouth nipples and regular nipples as well as regular bottles and wide mouth bottles. They also have nipples with different levels so you can choose how fast you want the formula to flow. I have not even gone past a level 1 and they are working great still.