[Xmonad] some basic xmonad questions

i recently saw xmonad mentioned on reddit, but there was a quick followup that it was not quite ready for public use. has this changed? i am a current dwm user and generally love the tiling concept, although i do not care for dwm's source code-based config system. will xmonad support a plain-text conf file? beyond being written in haskell, are there any compelling features in xmonad (planned or to-date) to differentiate it? how does xmonad compare to dwm with regards to system resrouce use? thanks! brad