Yeah I switched after Jackett kept having issues with RARBG before they shut down. The biggest change is the fact that adding a tracker to Prowlarr will automatically add it to radarr, sonarr, and the like rather than having to duplicate everything manually yourself.

I did, it was very little time to invest, and it's pretty cool that it integrates to sonarr & radarr and sync's your configuration from a central place. Also the web UI seems to have more information and stats if you ever need.

Jackett is for trackers that don't have a native api or similar but Prowlarr can likely handle most of what you use today.