We've been using JIRA as a bug database for a few years. Our team is rapidly expanding and we're trying to adopt some of the agile workflows and project planning. A few team members have used Rally in past companies and say it's a great utility...much better than JIRA Agile. In some basic evaluation, it seems that one of the biggest differences is Rally allows you to nest stories as deep as you want (and report on each level) while JIRA only really allows for 2 levels of nesting: epics and stories.
Surprisingly in googling the two, there aren't that many comparisons – which is odd considering these two tools seems to make up the majority of agile project tracking/management. I'm curious if anyone there has experience with both and what their thoughts are on the differences. Any insight would be greatly appreciated. Thanks!