I had the 3rd one and it did good, I liked that you didn’t have to have it plugged to a wall so with a pump bra you could walk around. But mine personally didn’t last long and I ended up buying a spectra
I have never heard of the second or third. I used and loved Medela with my first two boys. The biggest thing that sucked was having to plug into a wall and sit there to pump. The second thing was if you didnt have the pumping bra you had to hold the cups while pumping. I had the bra.