tmtvl parent
Because we're on HN I'd say that StumpWM being made in Common Lisp may be trotted out as the main advantage. Personally I'm quite fond of it having Emacs-like key chording (it's the keyboard equivalent of a cascading menu versus a flat menu). That said I'm so fond of awesome's tags and layouts that I can't bring myself to switch over (and programming those myself is way above my skill level).
> Because we're on HN I'd say that StumpWM being made in Common Lisp may be trotted out as the main advantage
It's not because it is in Common Lisp, it is because you can program it live without needing to restart the program to see the result. Some people call this 'hot-reloading' but Common Lisp implementations take this to an unreached level. Also it has sane defaults (well ... for Emacs users) but you can also mold it into whatever you like.