Both pumps are electric. I think you mean single vs double? The swing is the same auction as the freestyle. However of you look at reviews the free styles has a lot of problems with suction. Are you anticipating needing to pump long term? Or will you be returning to work? If so I'd plan on getting a new pump. The swing is a good pump but I wouldn't EP with it.
Jaelyn(6-16-07) & Dominic (2-4-10)