I have an IDE, but I keep going back to essentially the same setup you have. I find that GUI IDE's tend to try to be too many things at the same time. I like having nothing on the screen that isn't directly related to what I'm doing, and I strongly dislike ribbons of things I could click on but rarely, if ever, do.

BTW: depending on your workflow, and the type of code you are writing, you might find gaze interesting. I occasionally use it when programming something meant to run from the command line. That way I can see the progress without a whole lot of clicking to another window and "up-arrow" to repeat the same steps over and over again. https://github.com/wtetsu/gaze