Includes advanced Image/Media, File and Link handling, plugin support, and an Administration interface for editor configuration.
The support forums has recently been reduced, so only subscribers can report bugs and problems, and that is problematic.
There is no proper way of reporting a bug now, unless you buy the subscription.
That costs a star in the grade for the editor.
The only downside is that without paying you cannot even _report_ bugs (e.g. I've found a bug which blocks "paste as plain text" with Chrome browsers)...
Upon installation on most sites developed by big name professionals I cannot upload an image or simple things as text center, align left/right rendering it useless for my customers. If it doesn't work with the free version then why bother paying for it? I have moved on, unfortunately...