like joe band said, ride one at least once before you buy one!
Better yet, take the MSF ridercourse. It will get you your MC license, teach you the basics of safe riding, and you'll get to ride a motorcycle too! A lot of the MSF classes actually use TWs, so it's a doubly good fit for you!
You will not regret taking the MSF course, and though you don't state your location there's bound to be one nearby.