If you want your own pump, there are several good ones on the market. Manual pumps are usually harder for most women to use. They require you to pull or press a lever to pump the milk. The AdventIsis is a wonderful manual pump. It also has the speed of an electric.
Electric pumps are a little more expensive, but usually work faster.
A good brand of electric is the Medela Electric Breast Pump. These pumps come highly recommended from their users. They come very close to the quality of the breast pumps found in the hospitals. Mothers who go to work and pump their milk for their babies while there swear by this brand of pump. Once you decide on a pump, it's important to read the instructions and learn how to use it.