Editor of choice

WHat editor do people use these days? any favorites? i still use emacs;
i have tried atom and vscode but could not get the REPL server right.

Does anyone know what kind of interface do they need? I feel like
someone is going to say JSON.

it would be nice in kate to open a lisp terminal like the regular
terminal it comes with. I am inspired by this. it is almost like commint
mode. maybe an emacs server could work?

I don't know much about vscode studio or atom; but interested. how well
do they work for C or is everything java these days...