Best Electronic Document Management Software (EDMS)?

Hi Tribers!

I am not sure if I am off topic, but I wonder if there are any professionals in this field in our Tribe.

The question is: What Document Management / Business management system is best in Windows Environment?

I am looking into SharePoint, but as I am still new in this field, I am not sure if it can cover the fields like work flow/process management, hr integration/ finance etc.. I need sth that will cover the whole business management process, while "document management" is in high priority.

Any advice?

Thank you