Can anyone recommend an external logging service they've used with NS?

logz.io, though I've only done POC level work with it.

I am conflicted between using a custom record or an external service. We have a need to back a few months

I can't guarantee record has been changed or undexpected error on custom record

Good point

external services are optimized for this

I'm curious, what services would you guys be looking onto?

as per above, I did a nice little POC with logz.io recently. Worked well.