I've just started back at work and have been using a Tommee Tippee electric pump. It's been a nightmare - as soon as I get a decent letdown, milk spurts into the air tube and I have to switch it off hastily before it reaches the motor. Fortunately I have a manual as backup, but of course it takes ages.
I'd quite like to switch to a Medela Freestyle, hideously expensive though it is, because it looks like the most portable and I'm already using their cooler bag. The Ameda Lactaline seems to be popular, but it doesn't look terribly easy to lug into a cubicle at work and use discreetly (they have transparent doors and I'm forever hiding the pumps under a jacket). Help! I just want something that can double pump fast and isn't liable to electrocute me.