Hello, I am a supporter of the Medela Pump in Style also. I have 3 kids, Nick (3 1/2), Sophia (2 1/2) and Gianna (7 mos.) Gianna is still nursing and I am kicking myself for not investing in this pump from the beginning. Trial and error led me to it. It is expensive, but easy, convenient, and renting a pump would cost almost as much, if not more... I also used playtex drop ins, less dishes to do, for all three kids. You can pump and store in any type of bag or bottle and add it to the drop in. I would also recommend trying the generic (Target, Walgreens, CVS) drop ins, they are the same and WAY cheaper! Back to the pump, most hospitals will give you sterilized fittings for whichever pump you have and they come with if you purchase one new. I have a sealed package (from baby #3) at home with all the sterile accessories, just incase...
Lastly, if you plan on having more babies, the Medela pump in style is even more worth it! Like I said I wish I knew then- 3 1/2 years ago- what I know now.... It would have saved me a lot of stress and discomfort with the first two.
Good Luck and congratulations!!
J.