I don't breastfeed for my personal medical reasons (certain medications are not negotiable and are class D so I switch back to them after delivery) but on my old March board, I couldn't stop reading awesome things about Medela PIS and Ameda brand. Sometimes insurance will cover them too!
I used the Medela Pump in Style too. My IBCLC said it's the one they recommend because it's the best at stimulating the breast most like a baby would. I had to use it a lot in the first couple of weeks as DD had a hard time latching so I had to pump and finger feed. I kept pumping (to keep my supply up while she learned and for a stash) for a long time. It still works great and I plan to use it again whenever I need to pump for John.