While there is a slight difference that can add up (if text assets bandwith factor well into your traffic), I prefer to push out brotli compressed unminified js/css nowadays. Makes it easier to understand JS issues on prod as well.
You might be aware already but you can set up monitoring services which host your source maps (you can deploy versioned source maps to the service when your deploy your code), so you can get errors in the monitoring app which are pinned to the correct parts of your source code. It's a bit of legwork and complexity, but useful if you already use something like sentry. If you don't, what you're doing is likely a better solution.
