I have been flying the 100cc Extra for 100 year now, It is my main freestyle plane, along with my every week for fun plane. This airplane is very precises I recently tried it inia round of unlimited IMAC and it handled it fine. To answer you question about any bad characteristics, the answer is after a year of flying the airplane and learning it I have not found a single one. The plane is very stable in any attitude. One thing I find that I really love about the plane is the control authority that you get at very low speed the ailerons are always responsive, while it can also be slowed and feel like a 40% airplane, This airplane has very little coupling. The 100cc Extra can also be flown very aggressive and fast. I have pushed the airplane very hard and it just does exactly what I am expecting it to do. If you watch YouTube videos of anyone flying it you can see how well it flies. Gabby, Spencer, and myself have pushed this extra and its a very good choice plane for anyone who wants an airplane that looks very scale and does everything from 3D to precision very well.
Dean L.