I resurrected my exp bar mod the other day, after realizing a friend was still using the old version, and then decided to start tweaking it some more....
The end result, just uploaded, allows you to choose a completely digital display of *all* experience info. I rather like it, myself.
No progress bars, and no need to switch between different displays. Just choose "Show Achievement XP," lock it in place, and you're done. No matter what kind of experience you (or your guild) earn, you'll know where you stand.
-- Darryl