I am Avent generally very satisfied! Have all what you can buy so or you need for your baby. Until now I had the plastic Naturnah bottles. Use for 5 month old child nor the 2er sucker will do just fine! Many have complained that the glass bottles are as hard as a glass bottle is holding her baby and can not hold even the bottle. But that's the point in some cases !!! The dwarves are not at the bottle itself hold so I am now switched to the glass bottles. I am the bottle very well !! Vlt a bit more expensive but if you have a bottle to buy protection so they do not fall down right the broken keep halt also correspondingly longer !! I do not have the problem that are leaking bottles! And that glass bottles are now times longer hot after sterilization is of course stupid if one makes the finished bottle just before use! This is then, yes, but on the organization !! Because the bottle can not do anything for and also you can see that the milk stays warm longer and the positive in it!