I dont need a fancy UI for jackett since it’s only needed for the API.
Prowlarr does have the ability to do a search of all indexers including usenet, combined into one results list, which is very nice for finding rare or niche things outside of Sonarr/Radarr.
So I have both installed and configured, but only ever use prowlarr for manual searches cause jackett is working and i’m too lazy to change all my settings in my 6 separate ARR instances.