As a pure editor I prefer VSCode. It's fast and has a great plugin ecosystem. Another great feature is that it's config is just a JSON file that I can put into git and push it to my dotfiles repo making it easy to share config on all of my machines.

However, there's just some functionality in IntelliJ that I miss in VSCode like running tests. Of course there are plugins but they are all clunky and don't give you the great UX that IntelliJ does. I want the IDE to figure out where all the tests are and give me an easy way to run a single test/file/suite/feature. IMHO this is the killer IntelliJ feature for me.