I think if your going to pump full time, you'll need a hospital grade pump - because it's quicker, otherwise you will probably feel like a cow expressing 24/7 - and it's still hard work and can be quite emotional when you don't get the volume your after. I have a good electric pump and when I expressed for 24 hours, I was seriously attached to that thing all day! I don't know how practical it would be for full time expressing, but I have found hand expressing so much easier and quicker than my pump. I seem to get more volume (almost enough for two feeds) and much quicker than the pump. Pumping I only seem to get 60-80mls, some sessions I get less! I'm sorry I can't be of much help to you as I'm only really new at it all too... I know there is a section on the ABA for full time pumpers, maybe you could talk to one of them? Best of luck with what ever you decide!