They both lag. They're both resource hogs. IntelliJ has a better out of the box experience. VSCode has a much much more diverse and interesting plugin ecosystem. I run both. VSCode is interesting in that, depending on the project and/or the plugins required for that project, it can be much kinder or much worse on my battery life. IntelliJ is more predictably bad.
All being equal I'd choose VSCode at this point. When I want to do something like run tests the test plugins for pretty much everything I've looked at are way better. IntelliJ has some powerful configuration capabilities that somehow always manage to be constrained in a sucky way. Support answers are like "oh you want to do THAT. No, you can't do that, read this doc" where the VSCode way would tend to not be as configurable but support the thing you actually wanted to do.
Plus VSCode plugins are majority free. It's not that I mind playing for plugins per se, but my experience with Intellij plugins has been poor, so I don't want to go through the hassle of paying to find out it's rubbish.
All being equal I'd choose VSCode at this point. When I want to do something like run tests the test plugins for pretty much everything I've looked at are way better. IntelliJ has some powerful configuration capabilities that somehow always manage to be constrained in a sucky way. Support answers are like "oh you want to do THAT. No, you can't do that, read this doc" where the VSCode way would tend to not be as configurable but support the thing you actually wanted to do.
Plus VSCode plugins are majority free. It's not that I mind playing for plugins per se, but my experience with Intellij plugins has been poor, so I don't want to go through the hassle of paying to find out it's rubbish.