I hate the stock seat on my 2009 xl1200C been looking all over the net at seats. Reading forums still don't know, can't go to dealer they don't carry seats in stok. My seat pushes my forward all the time I have mid controls.
I HIGHLY recommend Mustang seats. I personally have a Roland Sands seat, but it was made by Mustang. Far better comfort than the stock seat, but then again your stock seat is probably nicer than mine was.
Any ways...good luck in your search!