I used the Medela Swing electric pump. It cost about £80 or £90 I think but it was well worth it, especially as I was pumping first thing in the morning when I wasn't really awake but C and T were!
I reckoned I could get 6oz in about 10 mins, but it does take time to build up. I started doing 1/2oz per boob and just built it up gradually over a couple of weeks.
H