"You'd be suprised at how nice and nimble those Boss Hoss's really are."
I followed a group of about 20 Boss Hoss's through the Black Hills from Deadwood to Keystone once. I was surprised how well they handled. I was cruising right along on my FXR with a tricked out motor (although it was leaned out quite a bit for the altitude). The Boss Hoss's were much better than I expected in the corners and I had to hit the throttle hard on the straights to keep up.
OH yea, they will flat out move. There is nothing else like them with all that available power they are putting out. Until someone rides one they have no idea what torque and horsepower are. I can sit on one of the 350's and eat anything up in a straight line either from a stop or rolling. Yes you are right they handle much better than most folks realize. We had a Boss Hoss demo down at my shop this last summer and you wouldn't believe how many of those big ol' boys were just plain scared to ride something that big. I am 5'9" and hover at about 200lbs so I am average height and weight and even after getting on one and smoking the back tire and horsing around on one these guys still were intimidated.