Status of Activity Log

Hello,

What's the status of this module? I need a module that provides an "audit trail" of the site's activities, this trail would only be available to users of a certain role. The trail would say who did what, etc. but I would also want to include Rules workflow changes. For example, "X just created a story in draft state". I've look at the other modules (Activity 2 and Hearbeat). Activity does not integrate with Rules and Heartbeat seems to be doing too much and a little buggy. In any case they both focus on social networking which is not my use case.

Is activity log a good solution for what I want? Or should I work on a custom solution?

Thanks.