After reading countless reviews, I've bought and tried several other types/brands. All bottles other than the Dr. Browns created suction. The nipples would collapse, resulting in leaks and a frustrated, gassy baby. I would have to remove the bottle from his mouth to get the air (and bubbles)to go back into the bottle so he could start sucking again. The gas in his belly would last hours-making him uncomfortable and disrupting his sleep. (equals tired, cranky Mommy)
