I run a pretty much stock configuration of Sublime Text alongside gnome terminal. I have no issues navigating projects as large as gecko/WebKit/Linux and gettin

I run a pretty much stock configuration of Sublime Text alongside gnome terminal. I have no issues navigating projects as large as gecko/WebKit/Linux and getting spun up on a new language is really fast: Open the project, maybe install syntax highlighting if needed and you're good to go - as opposed to finding/installing an IDE. My last Job had a large Java codebase and all my colleagues used Java based IDEs. I didn't see any performance disparity. I more than once saw a colleague take 5+ minutes making the same edit on a large number of lines because they hadn't learnt how to actually efficiently edit code in their IDE. The way I see it, you need to keep the codebases you're working on in your head anyway (the parts you're working with anyway) to actually be productive. You do this by reading and understanding the source code on the screen. Until an IDE can provide a tailored human interpretation of the code it's analysing rather than some narrow static analysis I just don't see the point.