Bought it last night for my 3 yr old son. I tried it in the parking lot and it was nice and smooth but with some steering concerns. After scooting it around the house--wood floors--and not allowing me to teach him how to steer, he didn't want to have anything to do with it. His older cousin tried it for 5 minutes and said, "I think I'm over with this one"--and they usually play with the scooters for hours.
Basically, the steering concept is awesome..if you want to ride it with minimal turns in a spacious playground. Otherwise, it won't work for close quarters. Another major drawback is that counter steering is not possible--because your feet will do most of the steering in this case. Returning it for the Buzz one.