I used a pump. The avent Isis seems to be the popular one. I also got an electric one, but found the avent to have better suction.
The MW told me that the pump wasn't as good as baby sucking to milk production. But to this day,I don;t really buy that argument. Seems to me that suction is suction. However, I never produced much milk. Baby would suck 'til it was dry, which wasn't very long. Then I would top her up with formula. After about 4 weeks of this I gave up all together and went for SMA gold.
number 2 is due in May, and I plan to give it a go. But if it's as painful and unsuccessful as last time, then I'm going to swap to bottles and not get too worried about it.
The only thing that really bothered me was the MWs seemed rather happy to offer to help me, and poke at my boobs. Maybe I'm a stuffy old bat, but I don't like people poking at my boobs. Yuck. Go away.
But, I agree with the earlier comments about colostrum. It's wonderful stuff. so I will definitely at least express that. Even if I switch to formula after a week, I think the benefits of colostrum go a long way.