Kudos to Datadog. I'm not a current customer, but when I took it for a trial run several months ago I found it to be visually appealing, reliable, and intuitive. It didn't have some of the advanced features that you would get with Hosted Graphite or Librato at the time, but it was a very strong contender. All of us will benefit from the high-quality competition occurring in this space!
What features of librato did you not find in Datadog? I'm a current librato customer and I from what I see datadog is better in most aspects. Also the datadog integrations are awesome. The collecd integration is just ok
