I own one and love it. Great low end power, good balance, Great handling. My only concern with them is they use a 4 bolt hub compared to the 3 bolt hub most Yamaha's have. I have just finished rebuilding the front end on mine and it was much harder to find the hub than it would have been for a normal YTM200 chain drive. BUT, it's worth it. The Shaft drive has the bigger 25x12x9 tires (vs the 22x11x8'son other ytm's) and they give an amazing ride, as well as better traction in mud, snow and other slushy terrain. Buy it, Love it, ride it. My vote.
85 Honda 200x, rider build almost complete, need aftermarket rear shock.
85 Honda 250es, with some work to do.