Breast Pump

Hello 🙂I need advice from breastfeeding moms 🙂 I'm planning to buy a breast pump. Is it necessary to buy 2 or is it ok to buy 1 only? Also, I have inverted nipples so I'm planning to buy a breast pump from Bobo duck as they claim that their product have a nipple stimulator to suck from inverted nipples. My next choice is Horigen, though they don't have claims that their product can suck on inverted nipples. I have asked their cs and said it is ok for inverted nipples but I'm not sure if I can trust their cs 😅 Have you tried these 2 brands? Do you have "uncommon" nipples? Which breast pump would you recommend? #1stimemom #advicepls #pleasehelp #breastfeed