Perfect handling "dirty" content (I can even select© from a website and paste to it)
Very well implemented plugin mechanism (wrote some plugins, working like a charm)
So much already-implemented plugins thanks to open-source crowd
Formerly we were using Telerik's Html editor at Hostamedia, however its like 90s editor and upgrading to CKEditor was one of the best decisions we made so far.
Older editor was keeping even "body" tags in result content, wtf? how can it be? how can an html editor contain body tag? Moreover, it keeps whole stylesheet from word after pasting, which we dont want.
Inline editing feature of CKEditor is superb. We are implementing some mechanism related to inline editing and we will need that