Found a new software diagramming tool called Astah. I had been using MagicDraw from NoMagic (expensive and difficult to manage the license). I need a drawing tool that has the affordances to quickly and intuitively draw models. By leveraging the different UML facets (or diagrams), the model can be quickly expressed visually... instead of laboring through text, to quickly share ideas and manage expectations for code or a system. Astah hits the sweet spot of being intuitive, platform independent (java) and free (for the community edition, which has all the diagramming functionality I need). Check it out.