I'm planning on getting it before baby comes. however my experience is probably a little different as i have successfully breastfed two kids already.
I learnt the hard way the first pregnancy that i should have been better prepared. i had a nicu(special care baby)and was sent home well before he was discharged.
As its not practical to be at the hospital back and foward every three hours i had to run around to shops and nursing mothers hiring machines and buying parts and filling out joining forms. things i couldnt be bothered with. I expressed for months and ended up just using the medela manual lactaset which was great but this time i will by the medela single or double electric off ebay. you can get 2nd had ones of ebay cheap and once theyve had a good bath in miltons solution theyre as good as new...