Caddie.. I'm expressing either during the night *yawn* or first thing in the morning as I am so engorged at that time. I'm only using a Tommee Tippee one, but am getting about 90mls each time... I must admit that it took a bit of getting used to, the first few times I got maybe 10mls! It's a bit of a juggling act, but I found I can get heaps more if I express from the other boob at the same time I'm feeding Alexander (talk about being a milking machine). I'm just freezing it all in those Avent Via cups.