The best one to use is probably the one you already know, right?

I would bad mouth Axum and Actix just because of the overhype. But then, the latter is powering this very platform, and the former is used in the federation crate examples 😉

So let me just say that I tried poem and it got the job done for me. Rusty API. Decent documentation. And everything is in one crate. No books, extension crates, and towers of abstractions needed.

I try to avoid tokio stuff in general for the same reason, although a compatible executor is unfortunately often required.