I have a Medela Swing. It's a single boob one. Nice and compact, quiet. I have it for 'occassional' use and it works great for me. Like Jodie just said, it's a pretty personal thing though. But I haven't had any troubles (oh except when I left it on the stove boiling and completely forgot about it until I could smell burning plastic! .lucky all the parts are easily replaced lol)

Good luck!