Postgres's FTS is actually quite solid! You can get very far with just the built-in tsvector. The ranking could be improved, though, which was one of the reasons for creating pg_search in the first place: https://github.com/paradedb/paradedb/tree/dev/pg_search (disclaimer: I work on pg_search @ ParadeDB)
Okay, but I didn't say it wasn't solid. I just said its ranking wasn't great because it lacks IDFs. It seems like we must be in violent agreement, given that you work on something that must be adding IDFs to PostgreSQL FTS. :P
