If you have access to an IDE, why would anyone use a text editor?
projectileboy: In general, I tend to prefer using a text editor over most IDEs, which are usually big and fat and slow, with poor usability. IntelliJ - for me - has always been an exception. I can't comment on the Ruby or Python plugins for IntelliJ; however, the Clojure and (my) Arc plugin work just fine. I find working with them preferable to SLIME or TextMate or whatever else.