CrunchBang Linux

I have been doing the minmal ubuntu install thing for a few years and was very happy to find someone with the same idea and is willing to provide for others. I have been using fluxbox tho and have read the forums and noticed that folk are looking for a transparent menu, dual paned file manager etc. Fluxbox comes with transparancy for menus and titlebars and I use the groups ability in the apps file to have 2 thunars in the one space, selecting them from the titlebar - similar to pcmanfms' tabs - and it will work with any apps not just similar ones.
http://omploader.org/vM3oxbw
is a screenshot as an example.
I'm wondering what the aspects of openbox are that made it the choice for #! since I've never tried to use it full time yet?