>>First: Why--does Medela keep changing their kits? I'm sure some engineer has a good reason (probably to keep his/her job), but honestly if it ain't broke don't fix it!<< Could it be because Ameda's hygieni-kit fits all three of their pumps without complicating/expense adding additions and subtractions? >>Secondly--Why would a company who appears to make the majority of its capital from pump rentals--sell a pump for $20 more than a 5 month rental??<< I think a lot of us are still wondering about this! One shining benefit to my time-consuming practice of doing pump trials before sales/rental is that my customers know ahead of time the differences. I've had two say that the PNS "pinches" and choose to rent instead, while others say they feel no difference. And when comparing to the Classic for a crisis, they all can tell the difference right off! But I'm still worried................... -Lisa Marasco, BA, IBCLC