See the error; Stop the error; Fix the error
With Rollbar it is quick and easy to see your errors, stop them and fix the code.
Rollbar understands when an error is new (never seen), reactivated (regression) and can notify you quickly when it spikes or re-appears. New Relic can hide some errors from your developers, for example you mark an item as fixed in a specific revision but it keeps on flowing in at a high rate. In Rollbar this is shown as a reactivated error and you are notified. In New Relic it stays as closed/fixed meaning you are not notified again.
Ensure that you you see errors so you can stop and fix them. New Relic will make your error life hard!