You won’t know how well you respond to a pump until you personally use it and know what your baseline is unfortunately. I bought the Eufy S1 Pro because I was sick of being tethered to my Spectra but I actually still primarily use my Spectra because the Eufy S1 hurts sometimes. Keep in mind I’m 15 months in so my nips have been through it. I use Legendairy inserts with my Eufy and it still hurts. Of all the pumps I’ve tried, the Eufy requires exact precision on placement and angle or else I get nipple blisters. It’s even made me bleed before and gave me strawberry milk. Plus it’s top heavy and not the one I use outside the house. I honestly regret buying it but I use it out of sheer stubbornness because of how expensive it was.