I have a Spectra S2 that I love, but I'm wanting to get a manual pump that I can carry with me just in case I need to pump while I'm out or in case the power goes out. I'm looking at the Avent and Lansinoh manual pumps but I can't decide! I'm leaning toward Avent since I have a few Avent bottles already. Does anyone know if Avent bottles would also fit the Lansinoh pump? They fit the Spectra so I know if I went with the Avent pump all my bottles would be compatible with both pumps, which would be handy. Does anyone have any experience with either pump?