In my brief experiences with Fluxbox in DSL on the X86, I found it to be very fast with a surprisingly large amount of eye candy for such a fast, small windowing system. It can even be quite usable with the right tools. What I really want to know, though, is how well it will compile on PPC. It would be a very fast tool for me and would help keep me from procrastinating, since there's less games for straight X than there are for KDE and Gnome.