I used Dr. Browns Bottles with my first daughter because of how much she seemed to be having issues with gas, and reflux. I can't say for sure that it was the bottles that helped, but shortly after starting with them her issues seemed to get better. Now, with my second daughter, I didn't even bother trying anything else, just went straight to Dr Browns, and she has had no problems. They are a little on the pricey side, and it takes a while to clean, because of all the parts, but it is so worth it. Plus, I have never had any issues with leaking, cracking or breaking. In fact, the bottles I am currently using for my second daughter are the same ones I bought for my first daughter, so that helps justify the cost as well.