1) i also have the medela pump in style which for me was just the basic upgrade from the more simple medela double pump which i used with my last lo.
2) i pump three times a day when i am working (MWF) for anywhere from 15 to 30 minutes a session depending on how fast i let down.
3)i get anywhere from 1-3 oz in my left and anywhere from 3-5 oz in my right depending on how many times i let down
4)it is not enough right now to satisfy lo and i am eating t hrough my freezer stash. i have added an extra pumping session each morning to increase stash.
5)(i think this is 5) i do like this pump. no complaints and it comes with it's own little carry case and also a bag to keep milk cold. it is quiet too.
6) i would recommend extra little p arts like the valves and the little flap things (technical term???) because the tiniest wear and tear can throw the whole thing to the wolves.