[didibus]

I've found it way easier to customize Emacs, and you can do so much more. Though Atom has pretty great customizability also. This is not true of Visual Studio Code, which has much stricter plugin points.

That said, I know Lisp as well as JavaScript. Obviously, more people know JS, so might find tweaking Atom easier.

In emacs though, I don't even need the internet to figure out how to customize things. C-h is all you need. There's a book bundled in, all functions and variables have amazing built in documentation. You can search for any binding, function or var by regex, go to their code, read their doc, redefine them at runtime.

The only place where Atom wins for me is in theming.

At the end of the day though, I had to go back to Emacs for performance and memory footprint reasons. Atom was just too slow, and used up too much memory.