I’ve tried Mudbombs Wysiwyg and had to abondon it since it hasn’t got support for the <!–more–> tag. EditorMonkey recently got scrapped, which was a shame since it was very promising. My strongest bet right now is WYSIWYG Pro from https://www.wysiwygpro.com. It looks really promising and $47 isn’t extremly expensive. I’ll probably buy it. I’ll let you know how it works if no one else has tried it and writes about it before.