I've only used ChatGPT of these - will check out the others.

I use it for ideas generation. Tried using it to outline articles and do more advanced stuff but it was pretty tepid stuff.

But to stimulate my thinking around new ideas = brilliant.

I've explained my use of it here - thought you might be interested:

https://medium.com/writing-cooperative/defeat-writers-block-with-these-3-steps-generate-an-endless-flow-of-ideas-414e575a5b74