I do like this pump . it be not painful and , IMO it empty my breast quite rapidly . I can not pump as much as my d can eat , but that be with all pump , as my lactation consultant explain . she encourage I to pump more frequently , but alas , I do not have the time at work . the only downside - which be with all pump , be the amount of piece to clean . I do recommend buy a hands-free bra\/band so that you hand be free . the bag be a nice quality and store all the necessary piece , a burp cloth , and my hands-free band . I do agree with the other to ensure you use the correct size shield . the smaller one work best for I .