APM depth
New Relic APM has 15+ language agents, distributed tracing, service maps, and a strong developer experience.
Splunk APM uses NoSample tracing — 100% of transactions ingested — which is a differentiator for debugging rare tail latencies.
For most teams, New Relic APM feels more polished day-to-day. For high-volume systems where sampling bias matters, Splunk APM has an edge.