I have previously documented my search for a /perfect/ window manager. I now believe that my search is over: for the last 3 months I have been using pekwm, and I think it’s great.
It had good keyboard control, but recently it was modified to include excellent keyboard control. In addition to all the expected window manager features, it also has tabbed windows, which are not as common a feature as they should be.
It’s not an official Debian package (yet) but the source contains all the debian config information, so a dpkg-buildpackage it all that’s required to make your own.