I have mixed feelings about this pump. My son was born 8 weeks early and didn't transition to full-time breastfeeding until he was about 3 months old. Because of this, I had to pump and bottle-feed him for the first 3 months. This pump wasn't reliable or powerful enough to use 7-8 times a day. I ended up renting a Medela Lactina from the hospital. Now that he is breastfeeding, I only have to pump once or twice a day, or whenever we are apart. The Medela PIS performs well for this kind of occasional use. I notice a huge difference between the Lactina and PIS, though. Namely, in the type of suction....