Helix's features look very cool, but I could not switch to it because of this bug [0]. It has been open since May 2022 and it is still not fixed. Basically you can't exit insert mode with a key combination like `jk`. Four years feels like a long time for such a basic bug. I will stick to NeoVim for now.
0. https://github.com/helix-editor/helix/issues/2612