I have found only one option that truly addresses my needs: The "Web Developer" add-on / extension developed by Chris Pederick.
With this plugin you can very easily disable ALL styles, Default styles, inline styles, embedded styles, and, you guessed it, print styles! SRC: http://superuser.com/questions/846082/how-to-get-wysiwyp-print-what-you-see-in-a-web-browser
