I am still having issues with my 09 Ultra Classic. I am waiting for the first service next week to make some adjustments but I am undecided. I am 5'11" and my lower back starts to seize up after 1/2 hour. I know I am stretching for the handle bars a bit. The dealer wants me to try a reach seat but I am worried that I will be too close to the floor boards and controls. Believe it or not my back is worse when I wear my harley boots (with a 2" heel) so I have been riding in running shoes. I am going to get them to tip the handle bars back a bit. I have read about Mustang, Corbin and Sundowner seats. I am considering a back rest too!! Living in Canada may limit what I can buy. Oh yeah...the weather is still cold up here so that could be part of the problem. I just want to be comfortable for long rides.