As someone used to Datadog I can't find anything that comes close. Datadog makes it so easy to throw adhoc data up on a screen and explore a hypothesis from there. Using Grafana or New Relic feels like going from a 30" screen to a 14" laptop - everything is just harder and more frustrating in ways that are hard to articulate.

Elastic is my choice. Don’t like grafana and dd felt like it was holding your hand while telling you to give them your money as they punch you repeatedly.