I used to use Avent single pump for 8 months plus, when I bought, I never to do any survey, only heard before the Avent brand. After I bought, I felt it consumed a lots time and yield was lesser.

At the end, last month baby fair, I decide to change pump, Lacte Duet Double pump, 429, I am very happy that it shorten my time and yield is increase with extra 2oz, as my supply is just enough for my little girl. It is more soft compare to spectra.. The price not that expensive too😉