I like Concourse from a manageability perspective, as compared to Jenkins, in that it is more of a "bring your own plugin" in a "just in time" fashion via resource-types-as-docker-images as opposed to requiring a priori provisioning/support of an installation-wide plugin/suite.
It is also very nice in that you can execute pipelines, and even just jobs, on the Concourse installation from your local CLI. This makes it much simpler to test pipeline/job tweaks without a single commit being necessary until it is verified to work. Yes, you can do something similar with the Jenkins Pipeline plugin suite using the Replay functionality but it is significantly more tedious (cut and paste from editor into a textbox in the Jenkins UI, bleh).
I (try to) do CD as part of my day job and found this slide-deck and video helpful in that it is from a practitioner, Daniel Bryant, that is working with Java applications. A key insight is that "container images become the build pipeline 'single binary'"