I have used this pump to express milk for almost 4 years (with 3 babies)! I do not work outside the home, so I don't use it as a full source of expressing milk. However, I use it frequently to express extra milk. It is small, quick, has 3 settings, and is THE MOST COMFORTABLE breast pump. For me, that is the most important. Other pumps are hard plastic, cold, and seem rigid. This pump is comfy, and adjustable. The bottle nipples work great, and it is convenient to pump, pop a nipple on top, and feed to baby. My downsides: not so easy to clean, and kinda loud.