I had a Mustang sport touring seat on my previous bike (VTX 1800C), and liked it quite a bit.  I was figuring I would give Mustang the first look again when looking for a 2-up long-ride seat.  For local riding around town, the stock SERK seat should be good enough for me.
In regard to your windshield dilemma, quite a few 2013 SERK owners have had the same issue.  I'm 6'3", and there wasn't any way the Windsplitter was going to work for me.  I just bought a used OEM 20" RK windshield and went for a quick 20 minute ride yesterday.  That was the first time I loved EVERYTHING about the ride, and could truly enjoy it!  I'll be going with either a Clearview or a LongRide replacement, and will be asking everyone's opinions/experiences in another thread.
Crap, sorry for the  

Tru