I purchased my ST with he intention of replacing the seat because I had heard the stock seat were so uncomfortable. I rode the bike about 1,500 miles and it was somewhat uncomfortable so I went ahead and ordered the Sargent World Sport Performance Seat ($684 including tax and shipping). I went with Sargent based on a recommendation from a friend. I have put about 500 miles on the bike since installing the seat and have not been impressed at all. In my opinion the seat is no more comfortable than the stock seat. The seat looks a little nicer that the stock but I was sure expecting more from the Sargent seat in the way of comfort. I would not recommend it. I guess it is one of those live and learn things.