Also started using gogland for go projects.
To compare with other IDEs, I think the best way is to choose one (any one ide), and become fluent in it.
Whatever other IDE you compare against, will always look mediocre because "this IDE didn't have a shortcut for that action". I have seen people using idea like a general/not so intelligent IDE, where they just edit text there and not use any other feature !
I don't really use the Database tool, I'm not even sure if it exists anymore in the IDE since they released DataGrip.
Debugger tool is great but for non-objective reasons I liked Visual Studio's more (not for PHP).
In overall, it does everything that it should AND more. You can usually drop other software and just use PHPStorm for most of your development needs. Similar things can be said about other IntelliJ products.
Overall their editors are ahead of most I feel.
It is what you would expect from Jetbrains on PHP.