Both them and exceptional seem to be in zombie mode. Massive bugs that have remained in place for what feels like years, no new features etc. I'd like to go with someone who cares!
If you already integrated with Airbrake, you just have to reconfigure the host it reports to, to your own errbit server and it'll swap everything over from deploy tracking to error reporting.
Errbit is an active project, https://github.com/errbit/errbit, and error reporting libraries don't tend to need a lot of maintenance.