Hi there,
I has a c/s and my milk didnt come in until day 5 when i went home so i expressed in hospital using their pump to top her up as Izzy was big and hungry all the time. Not that i got much at that time. Im sure all hospitals have a pump = mine had an electric and i bought a manual one for home- i prefer being in control of the pumping action as i have had reallllly sore nipples - but for some people they find it tiring. I have alot of milk so am able to express about 130 mls in about 6 mintues on each breast. I bought the Avent Isis Manual.
So after all that babble - i would say wait and see if you like the one in the hoslpital, you can hire them for chemists too - usually the Medela that they use in the hospitals i think!
Good luck!~