[vanschelven]

I'd say "track errors first" [0] and focus on APM later (if at all). If you're worried about Sentry's lock-in, know that there are API-compatible drop-in replacements[1][2] though they are less feature-complete on the APM/observability side.

[0] https://www.bugsink.com/blog/track-errors-first/

[1] https://www.bugsink.com/

[2] https://glitchtip.com/