Lucas Rincon

hands down the best microservices metrics. APM experts shows a full evaluation accross quite a few tools that can also be helpful in your decision-making process https://www.apmexperts.com/observability/ranking-the-observability-offerings/

this is quite affordable and provides what you seem to be looking for. you can see a whole thing about the APM space here https://www.apmexperts.com/observability/ranking-the-observability-offerings/

what are the most important things you are looking for the tools to do? each has their strong points... are you looking to monitor new tech like containers, k8s, and microservices?