New pump

I'm due in June with my 2nd. I LOVE my S2. However...I have a 2 year old at home. There are quite a few pumps now that you can stick in your bra and walk around with (freemie, I think, elvie, willow, etc) I've heard some hurt. I've heard some dont get much out. I've heard some are just fine. I still plan on using my s2 when I can, but what do you all have EXPERIENCE with (good or bad)? I've been researching but I want to hear all of you all's opinions.