I've narrowed down my choices to the Medela PISA and the Spectra S2. I'm really leaning towards the Spectra as the reviews I've found said it blows the Medela out of the water, it's just a lesser known brand. I'm struggling on wether or not to go the safe route with Medela, or chance it with the Spectra. Any Spectra users that can comment on this and provide insight??? Thanks!