[armchairhacker]

I’ve used both Atom and VSCode, and personally I’ve always liked VSCode much more.

My experience with Atom was that it was a stereotypical “Electron” app in all the bad ways. It was very slow to start and the text editor was laggy; the UI was way too spacey and it was hard to find things and I just didn’t like it; and there were lots of bugs.

VSCode is also implemented in Electron and it has bugs and UI quirks, especially with extensions. But it launches almost instantly, text editing is almost instant (even if extensions are slow thanks to some sort of priority threading), the UI is clear and compact, it has more key combinations. Once Microsoft introduced the LSP I think it was over.