What is your experience with Raven or such meta-harnesses, does it consistently outperform vanilla?

I get the same "one-shots" from the vanilla codex as codex under raven. It took some work to get the orchestrator to send good refinement prompts, and it still doesn't have good taste. I need to bring that with my own review of the code. If you notice you send a lot of repetitive refinement prompts it's worth it.