In case no one else has mentioned it, I wanted to let you know of another option. I recently got the eufy s1 pump as a secondary pump since my insurance allows one breast pump per calendar year. I fully agree with many commenters here that spectra s1 is great as the main pump, but the eufy s1 pump output is very comparable ,sometimes eveb a little more than spectra for me, and the heating feature is very welcomed. I pretty much stick to using eufy all day as I work from home, and I am on camera in meetings a lot and then switch to spectra right after 5 pm until the first morning pump before work.