I bought this pump after hearing that it was well liked by other people who owned it and that it was half the price of the Medela Pump in Style. The Ameda pump is satisfactory - I like the ability to adjust both the speed and the amount of suction. It is also small enough to carry easily if needed. Another plus of the Ameda is that there is no way that the milk can ever get into the tubing due to the pump design. (Medela pumps don't work this way).
The only downside I have noticed in the pump is that there are very fragile valves on each pump. I've broken 2 of them already in one month even with gentle treatment. Replacement valves run about $2.50 apeiece, so I went ahead and ordered 8.
If you're looking to save money, just order the pump without the bag. I know I have tons of soft coolers at home that I plan to use instead of spending an extra $50 for yet another bag and cooler.