I use Grafana at work to great effect. After doing TONS of review on other graphite front ends and not being satisfied with the usability and flexibility of any of them I was close to giving up and was considering building my own solution. Then Grafana appeared from the mist. It has come a long way but from day one it was very functional. I use the templating system inherited from Kibana(which Grafana was original based on) to great effect. It allows me to create drill down and overview dashboards to zoom in on particular sites, clusters, or servers. Integrating is a snap by linking in with query parameters from other tools which get fed into the template system. I actually can't imagine a time without Grafana and would encourage anyone using graphite(or one of the supported backends like influxDB) to give it a spin.