guessing that this isn't what works for you, but it is the third seat on my bike and the only one that works for me and for my +2 also... especially for long rides. this is the only seat that I have ridden on a sporty with decent butt time.
wide mustang here:
I have a sundowner which is nice but after seeing the mustang on your bike and how much you like it the seat may be worth a try.
Im sure the OP thinks the sundowner is butt ugly. But my wife thinks it's amazing. After some mods to the rider portion via MeanCityCycles.com the saddle is a pretty great place to spend hours....
I've seen lots of posts about the Badlander not being comfortable but I certainly don't mind it at all compared to the stock seat. Has less of a lip to hold your butt then stock but it has softer edges for your inner thighs and is pretty low profile. Haven't put the stock seat back on since I've gotten it, even riding solo.