When it comes to pumps, you're better off spending the extra money to get a really good pump. Evenflo and first years aren't that great, though some moms have been able to pump with them.
See if you can get mini electric pump from your WIC office, they supply them to exclusively breastfeeding moms. Everything WIC gives out is Medela. That is the best brand to go with, really.
You can rent pumps from stores, and some stores will work with you when it comes to price. That may be your best bet. You may not even need a electic pump unless you're going to work early. Once the baby has built up a good milk supply and can go for 4 hours or longer without nursing, you shouldn't need to pump very much. A good manual (that you can get from WIC)should do the trick!
PS. Ask your WIC nutritionist/breastfeeding peer counselor, if there is one at your WIC office, about their policy on giving out the Medela Pump in Style. Those are given to moms, not rented out. But you have to meet certain criteria. The ones I've given out were to moms of premature babies or babies who are unable to suck well at the breast due to medical reasons. can't hurt to ask.)