QoL features is where WebStorm shines! I don't look forward to when I have to open vscode instead sometimes.
Just the floating and ephemeral "Search in files" modal in Jetbrain IDEs would convince me to switch from any other IDE.
I still debate how much productivity I've gained from better AI compared to the loss from switching off WebStorm
But their tab complete situation is abysmal, and Supermaven got macrophaged by Cursor
my favorite is Ctrl+Shift+A which lets you search through all available UI actions (hence the A). That's just so helpful if you know the IDE can do something but you forgot where in the menu structure it was. And to top things off, you can also use Ctrl+Shift+A to look up the keyboard shortcuts for every possible action