I use both, and it really depends on the language.
Something like Java is really benefitted from IntelliJ, Spring integration is excellent, but especially scripting languages like Python or JavaScript/Typescript don't get enough uplift and you might as well use VS Code.
I mean for Java. IntelliJ is made for Java. If you want to do Python, Jetbrains (the creator of IntelliJ) made PyCharm. For Javascript, they made Webstorm.
