What is the best breast pump if you are exclusively pumping? My baby is 4weeks old. I started with the Medela harmony manual pump and as my supply increased I went to WalMart and bought a cheap Evenflo pump it worked okay for a while but now since my supply is in fully its not emptying my breasts. I can pump and an hour or so later they are full again. I have thought about the Medela Swing. Unfortunately I cannot afford the other Medela pumps. Does anyone else have the Swing and are EP? Thanks!