I just (today) sold a pair of F12's, and they will be missed. A true full-range speaker. Excellent midrange and authoritative bass. But, have them pulled out a ways from the back wall or they have the potential to sound boomy.
They have a vinyl wrapped enclosure, but it's very well done.
If you're serious about the F12's, I don't think you can go wrong as long as your room is large enough to handle them.
The only reason I sold my pair was because the room is changing purposes.