Ihncheol,
See the videos below of the VisionAire. The AMA venue was pretty small and didn't allow for too much.
http://www.youtube.com/watch?v=pvJ4T76rP6g
http://www.youtube.com/watch?v=FEZ2CGJooIw
The Carbon-Z Splendor is amazing. I have seen it fly with and without gyros; I will have one soon and can report back. It's a very capable airplane.