Both my sister and my friend use the avent bottles as they are advertised as the best for your baby especially with colic. But they are absolutely the most annoying thing I have ever used. Nearly every time you shake the bottle or tip it up to feed the baby it leaks everywhere. Does'nt matter what you do and I can't figure out why they do this. It is really frustrating not only at 1.00am in the morning when this happens but also the fact that they cost a lot of money. I know that it is not just me and something needs to be done about... read full review »