I spent some time evaluating tools like Rally, ScrumWorks, and XPlanner about 6 months ago. After investing some time with XPlanner and some configuration hell, I dropped it after a few weeks on a Sprint because the workflow was more of a headache then just using corkboards, index cards, and Excel.
In another little bonus from the Certified ScrumMaster course I bumped into Victor Szalvay, one of the founders of Danube Technologies the creators of ScrumWorks. He quickly informed me that they had dropped the licensing on ScrumWorks and now offered it for free. Definately back on my list to check it out, especially now that I’ve got a better idea of what we need in a tracking tool.