Current deployment is Graphite (Carbon/Whisper) proper due to a lack of time to change it out, but eval'd Dalmatiner and should be migrating to it in the next 6 months (before the year is out). Made it through testing like a champ.

The use case isn't particularly interesting though. Just multi-site machine and application metrics aggregation. Needed something that could work with Graphite tooling, would be highly-available, and be comparatively trivial to operate/maintain.