I'm an emacs user but I often use a GUI IDE when it makes sense. I find I'd rather use JetBrains products (PHPStorm, PyCharm and IntelliJ) even though the actual text editing part is nowhere near as powerful and efficient as my Emacs setup. Sometimes if I need to do some repetitive or monumental editing task that I could script in emacs or use the macro system, I'll switch over for a moment. The benefits of being in an environment with a debugger and many other tools as well as project management and auto-completion that is consistent across the languages I use outweigh the cons of leaving emacs. I'm considering switching to Visual Studio just for a React Native project I'm working on because it seems to handle Javascript/JMX much better than anything else I've tried.