First, we're in the Oil/Gas Industry - manufacturing vertical, I mention this because after some very expensive trial and error we have found that just because a DCMS (Document Control Management System) is built with manufacturing or construction in mind does not mean that it can accommodate the needs found in the Oil/Gas end of the spectrum.
I am looking for an effective, full featured Document Management System. We have attempted going very basic (Sharepoint - failed within hours of implementation) to moderately enterprise level (Aconex - which has limped along for over two years now thanks to someone signing a 3 year contract without fully... nevermind, we can get into that later if needed). Now, I'm no Document Control Manager, but I have a pretty good idea of what kind of capabilities we need.
Here's my question to the community, what is the biggest, baddest, most awesome Document Control Management System that you have seen or had the pleasure / misfortune to bump into, and how can I find out more about them?