I used to curse FCKEditor because it was so slow and unweildy for ajax apps. Creating and destroying and then customizing was a pain. Not many WYSIWYG editors really do these nicely. They all seem to be made to work in a static load once html page. Now CKEditor says you can do all that so I'm very excited. If it is fast, can create and destroy with ease and plays well with jquery then it's my new favorite editor!