This little pump, the medela single electri, is fantastic. It's small enough to be effective, but powerful enough to pump on a regular basis.

I was exclusively pumping and used this little pump for nearly 4 weeks while waiting for my medela pump in style to come in. I would say it was used for an hour at a time, up to 8-12 times a day.  Suction stayed strong throughout the entire time.

Towards the end of my pumping time with this one, the motor started to whine. I called medela and they immediately sent me a brand new one, no questions asked. Even though I was clearly abusing the pump and using...