I don't have all that much luck with expressing, but then I've only had an electric Avent one. Which broke today.
I wouldn't bother with more pumping but I have some events in London I can't take my 6-month old (I'm moving back from Singapore) to so will need to be able to get her to take a bottle. She will take EMB, but not formula.
Someone rec'd the Medela Swing. But it is expensive and wondered if I should bother if I wasn't all that successful with the Avent Isis.
Cheers (I hated expressing with the Avent...)