L.D.
I used a Medela Pump N Style. I got it from my sister - I just bought new hoses and sterilized the bottles so, for me, it was free.
However, considering how often I used it (2-5 times a day for 8 months!) I would definitely buy a Medela if I had to. To me, the breast pump was one of, if not the, most important pieces of baby gear.
Did I need a bassinet, pack n play AND crib? No. Did I need a swing, vibrating seat AND portable swing? No. Did I need dozens of little bright colored toys? No.
Did I need a great breast pump? Yes.
My point being, if $$$ is an issue, scrimp someplace else.
Congratulations on the new baby!