I've never seen one but I've read that they're actually quite user friendly and provide a wealth of information. Was what I read over rated? Any examples of why they're not so great?
I work in emacs with lisps (mostly clojure) on x86, usually via a terminal emulator. Old tech is stable, fast and cheap. I know that, you know that, Bloomberg make their billions off of it... but they're calling out Cities for it. Just weird.