At my company we use Sprint for our Internet connectivity. They aren't the cheapest, but their service is excellent. When we have the rare outage, it is handled quickly and many times proactively. For the second time in as many outages, the monitoring center was calling me while I was on the other line with their support center opening a trouble ticket. That's proactive. Unfortunately, that second time was today and it has already been a long, unconnected three hours.
The problem isn't with Sprint Data Services (SDS), but with Sprint the LEC. SDS was good about giving me at least hourly updates on the status. The LEC had to send a technician to a POP that was an hour away. Now they think the problem is in the CO. The only good news is that this affects more than just my company so it gets escalated to the highest priority–whatever that means to the LEC.
[Update] Well, three hours after the first outage I'm back in business–literally.