I don't understand all those happy people speaking about this editor. It is stripping out pieces of code. Pasting into your code it's own nonsenses. No settings helps in editor parameters, nor in joomla backend. When You consider, that this is for client, which is non-programmer, and not for You - developer, usability of this editor is very small. Joomla needs editor for people, which has not technical skills, and with good user experience.
BTW: This is the only bad rewiew, that I wrote.