I don't need the extra weight, nor do I need 1600/1700 cc's of the T-Bird. The Speedmaster is nimble, quick, and can easily be adapted to various comfort levels. Oh, I also don't need the added insurance costs associated with the T-Bird.
I DO like the convenience of the belt drive of the T-bird, but I MUCH prefer air cooled engines.
I am VERY content with my Speedmaster.
H.