I'm longtime user of VisualStudio, but I decided to try WebStorm
It's good that there are VisualStudio keyboard shortcuts, but they are extremely limited, only basics work more or less (like step-in/step-out in debugger).
What I find extremely annoying is that it doesn't have proper way to do vertical edit on multiple lines. It's kind of exist, but who uses mouse to edit text?! wtf is that, to do vertical edit I need to do alt+mouse click!? Is it a joke? :) I'm kind of used to Shift+Alt+arrow keys to do vertical/multiline edit, this combination seems to be working in most editors that support vertical edit (starting from ultraedit, notepad++ and visual studio).