The first two pics are the same seat, what's nice about Mustang is you can return it if you don't like it...
One-Piece Smooth Touring Seat - 2009
Note: This seat will move you forward at least an inch and up about two inches. The third pics is the final version of that same, factory Mustand Saddle. I had the seat modified by cutting the foam to fit and recovering with elephant.
I have a Danny Grey Big Seat that is nice, but if I got one of the narrower solo saddles again, I would have a gel insert installed from the factory.
My guess is, that the Corbin Dual Tour is the most comfortable for the long haul; but these folks have a no return policy and getting fit issues resolved is a PITA. Been there done that. I've owned three prior "Dual Tours".