I have wanted a Wing but just seem to be very happy with my F6B. The F6B just looks better to me.
BUT here are some differences from Wing to F6B
No Reverse
No Adjustable Windshield
No Lighted Handlebar controls
No remote Adj Headlight
No remote Adj Rear Suspension
No remote locking Saddle Bags
No Heated Seat
No ABS
Obviously no Trunk... much easier to throw a leg over
slightly wider Fairing... noticeable if you use highway pegs
On Older Standard Models
No Cruise Control
No Center Stand
No self canceling Signals
No heated Grips