Both are good bikes from companies that have been business long enough to know how to make a long lasting product. I have to admit the America is my favorite after 36+ years of riding but it's really about what suits you, including how mechanically adept you are and how much you want to do to ride. Chain drive bikes require maintenance, belt drives not so much. If style is a factor, and it should be, the Triumph is the better choice. If aftermarket bling is important the Vulcan has many more accessories from many more vendors. Pick a direction and take it and ride.