I've had really great luck with Xfinity. They weren't an option in our area until very recently, but they are much better than what we had with CenturyLink.
@WeveBecomeEastHouston : Thank you! We just called in and switched to Xfinity.
@sandman was right, CenturyLink is slow. We never had anything to compare it to as we've had CenturyLink for years. The fastest service they offer in our area is 20 mbps. Now we're going to have 1000 mbps! We're switching everything over; internet, 7 TV's, home phone and cell phones. Plus it's shaving roughly $60/month off the bill.
They're coming out next Wednesday to install.