CA Personal Injury Lawyers - How Useful Are Document Banks (CAALA, Prelit Guru)

Hi everyone. I’ve heard of several document bank resources. As someone in CA who is looking to get well informed in PI, how useful are these?

Specifically, I have heard of CAALA, prelit guru, and Justice HQ.

I don’t mind spending some money on these, but I’m unclear on what they include. Is it just form, pleadings & complaints, motions, and like? Or is it more comprehensive with best practices for intake, demand letters, etc? Many thanks in advance.