This is, bar none, the best automated window manager I've used in OS X.

I cribbed these from one of the examples, but my favorite "beyond just resizing" commands are:

    bind ;:cmd;ctrl throw previous

Which sends the active window to my second display, and

    bind /:cmd;ctrl hint ASDFGHJKL

Which overlays all windows on screen with qwerty home row letters, so I can foreground any of them with one more keystroke.