I like the stock seat too. It's soft and comfy right off the show room floor. But when I sit in it for hours at a time, I get the monkey butt. I bought the Mustang Vintage Wide with backrest and passenger pillion. Usually just run the solo, as I don't have a passenger very often. It seems hard at first but after a few hundred miles, you can feel it breaking in and it's quite comfortable on long hauls.