Which breast pump to get?

I recently started researching the breast pumps that are offered through my insurance and have narrowed it down to the Medela Pump in Style and Spectra S2. Medela seems to be the go to brand among my friends with kids but the Spectra is newly available in the United States and seems to have a lot of great reviews. Does anyone have experience with either of these pumps? I would love any input that you experienced ladies may have :)