Spectra 9+ or dual compact

I really feel you on this, going back to work and needing something portable is such a juggle. I haven't personally tried those two but my friend used the Spectra 9+ when she went back to work and she said it was really convenient to carry around and much lighter than the S1, though she felt the suction was a little gentler. She mentioned it worked fine for maintaining her supply as long as she was consistent with her pumping schedule, so it might be worth trying if portability is your main priority.