The long answer involves an analysis of your riding style and needs. Do you want to ride in the woods? do you want to commute on the freeway? Do you want to go to mexico? Do you want to tour cross country? Do you want to ride in the desert? Do you want to ride around town? Are you tall? Are you short? Do you want to carry camping gear? The right bike for you may be one of a number of bikes depending on your answers. It might be a 250 or it might be a 650.