I use org-mode for note taking and some task tracking. My main doc writing setup is more like an ide setup.

markdown<->docx with pandoc lets me use a ref-doc.docx file that ensures all the styling I need for legal docs gets into the word doc. So you make a markdown file from the ref-doc.docx then edit the markdown file and convert to docx using the same ref-doc and everything in docx has the correct style, and stuff like line numbers and headers are preserved. Pretty sweet.