Well, I wouldn't recommend IntelliJ with plugins. I would only recommend Webstorm.
Everything works well. The intellisense and linting integration is amazing. CSS selectors are autocompleted from indexed HTML. If you don't have any red squigglies in your TS or HTML files then most likely your Angular app will just work. Plus, point-and-click to navigate through classes/methods like Intellij. No more "let me search for this method by name to find the declaration."
Good unit test integration w/ jasmine to top it off.
Just too many benifets to ignore. If I had a company I'd require development in an IDE.