Markdown with a formatting toolbar.
I'm on 2.1 stable. Right now, I'm using the WYSIWYG (CLEditor) v 1.3.1 that notes it's "deprecated in favor of Advanced Editor" and on its final release.
Personally, I prefer markdown, but my users need some kind of formatting bar to work with. WISIWYG works well, although it tends (understandably) to do very ugly things when people paste in text from Word
I can't HELP but notice that this site has a formatting bar (for a nice user experience) that outputs markdown (for a nice clean text experience), and I'm wondering what formatting addon that might be, and if it's available anywhere.