For all the new Mommies wondering about which bottle is best. My daughter just switched to the Dr. Brown's standard plastic nurser set. My granddaughter is 1 month old & loves these bottles. I love these bottles, well worth the $25 for 3 9oz. bottles and 2 4oz bottles, which include slow flow nipples for all nursers, 2 extra level 2 nipples, bottle/nipple/valve brush cleaners. I would give 6 stars if possible. My granddaughter does not spit up, rarely swallows any air, fussiness is cured, & has actually gained weight since switching to Dr. Brown's bottles. Only con is the bright blue logo on the bottles. It would be nice to have a choice between girl or boy colors. At the end of the day pink or blue is irealavant when you have a newborn that is happy.