I have many moms who will not pump and store if they have to use bottles. They say it takes up to much space. What is the difference in M---- freezer bags and the bottles? What about E----? It seems the studies go both ways. Who does these studies? I also had a call from a dad who said he was told by a nurse "You must store in glass because the milk dies if in plastic bottles or plastic bags" and "you might as well not breastfeed at all if you don't use the glass" <---GREAT! For all those I e-mailed about the PIS, my reps are going to meet with me on the 10th. They say they don't know anything about the mold except it must be the mother's washing the tubing and not getting it dry. My question is why is this not happining in the other pump kits? Michelle Ramsey