I built this for under $200. It's so smooth and consistent, I end up using it every game. My mechs and Angel just sit in the bag.
My advice is a cocker based pump, then if you like playing pump, get something more top end. Also, try pumps at the field if you can. I'm always willing to loan out my pumps to introduce people to that kind of play.
Brace yourself for all kinds helpful advice!