We did try Sentry, but we couldn't really get the UI to work for us. By default, the logical unit it uses is the error, and our project view would quickly be spammed with all the events and become unusable. I haven't personally researched it (I've used Sentry for errors-only needs, and it works well for that), but from what I heard the error-centric functionality made it hard to work with traces.
Would you happen to have any tips on how to fix that? Maybe we just got it wrong.