Ask HN: Best WYSIWIG?

To date we've used either markdown or HTML. We need to transition to something more user friendly for our merchants. Suggested WYSIWIG?

I've had issues in the past with WYSIWIGs producing poor quality or even confusing HTML. Any suggestions or recommendations?

We're looking at these 3 right now: http://imperavi.com/redactor/ http://ckeditor.com/ http://www.tinymce.com/