Kudos to Ann with regard to her statement about ROSS. I have but one thing to add... Through my many years of assisting breastfeeding moms, it has become apparent to me that Formula company breast pumps were developed for the distinct purpose of sabbotage. None of them have descent suction. The whole purpose of their existence is for women to try pumping once and turn to the bottle... Just like the Hosp. Formula packs and the cases sent during pregnancy, these pumps lay on drug store counters, waiting for the unsuspecting new dad to arrive just before closing time... Debbie Albert, IBCLC