I liked the Sundowner, but it didn't allow the use of a backrest. I tried a one-piece Sundowner with a backrest, but it's a slightly different "fit" than the solo verson, and I like the solo look (I have a large Mustang pillion for touring and a smaller one for tooling round). I really like the Mustang, it's a little lower and wider than the Sundowner and the padding is a little more firm.