Which Internet provider should I go with?

I currently have comcast which is okay, but occasionally the connection cuts out. Which is a problem when my mom works at home. So now she wants to switch it to qwest, which is advertising "up to" 12 Mps I live in Minnesota if that matters.

Here's our speedtest for comcast. If I was any good at converting Kbs into Mps it'ld help. http://www.speedtest.net/result/340546172.png