Jumped the driveway on the 200s as a young kid...didn't weigh enough to stick the landing and it started to hobby horse bounce and threw me over the bars. Felt the helmet squeeze sideways on my noggin as the wheeler planted itself on my head. That was a good learning experience.
That was the only motorized wheeled thing I rode as a kid, and ever since, a 4-wheeler doesn't feel right. With the 3 wheeler, your limitations on slopes and turns are clearly communicated to you by the machine...much less so on 4 wheels.
