I've been reading my recent edition of Baby Bargains and read a couple of places where they DO NOT recommend using a "second-hand personal pump". Does this also apply to borrowing (long-term aka I'd be the only user during specified several-month time) a close friend's or relative's, even if I buy a new collection kit? If it's really bad to share, I will just suck it up and buy my own, but really trying to save money. I work full-time so will be needing to pump daily once I go back to work to keep up enough supply for feedings while I'm away. Any advice or perspective will be appreciated. Thank you!!