I have an Ultimate on a VTX and it is great. I was all prepared to install one on the F6B even went to the factory to check them out. Unfortunately the Big Boy I wanted does not really set you backwards any more than the stock seat as it does on the X and that is what I was looking for as well as comfort. I also think that it looks better than any of the others, really liked the silver stripe offered. After a while trying to decide what features and adjustments I wanted and how to pay for a RDL I came to like the stock seat. Have traveled all day on it and it does just fine for me.