I have Aetna insurance and went with the Hygeia hospital-grade double electric pump. I was a little nervous because I hadn't seen many reviews, but I'm so glad I got it! It has two adjustable knobs- one for speed and one for strength. There are suction tubes that connect the machine to the bottle containers, making it really easy to clean. It's also La Leche League approved and can be recycled when you're done with it!
I can usually get through a pumping session in 10 minutes (that includes 2 letdowns). I've used it during these last few weeks that I've been back to work and get enough milk during the day that I have not had to formula supplement.
So, I know it's not as popular as some of the other brands, but if you have the option of getting it free like I did through insurance I'd recommend you consider it. No, I don't work for Hygeia but was crossing my fingers that it would work and want to share my positive experience :)