In the past, I've spent a lot of time working in IDEs, mostly because I was using proprietary languages where the IDE and the compiler were tightly coupled. Some were pretty good, others not so much. I've come away from it convinced that an IDE is a terrific tool for developing GUIs, since you can get all the draggy-droppy form creation and so forth.
But I've never much liked making GUIs. I mostly write back-end server code by preference and web apps by necessity (i.e., that's where most of the paying work seems to be), so my preferred "IDE", like yours, consists of several xterms running some mix of vim, bash, tail, top, or maybe a couple other things and a nearby Firefox window, whether for testing web code in development, looking up reference materials, or occasionally dropping by the monastery to check out the latest rumors of Perl's demise.