I have the medela and it works fine - takes a bit longer to empty. I also have a spectra and it’s my favourite! I’m in Canada but could order it off American Amazon
I love my Medela freestyle so you can walk around and not be stuck at a plug
Personally I've had couple medela and they are good but parts fail very quick on them first one i had yellow rubber fail and I had returned 3 tines have the freestyle now and machine playing up to be honest I think they not meant for long periods and after couple months will completely deteriorate
I have Medela, the hospital grade, it empties my breast very well.