Well, we have been flying ours for the last 3 days. The first 2 days we had engine problems, but today every thing when find. The engine proformed great and the plane is a get flyer. It is very stable, fly's just like a pattern plane. It harriers like it was on a rail and harrier landings are easy and straight forward. Knife edge flight is straight and uniform and knife edge loops are easy too. Rolling circiles are hard to do then with the Extra 260. We haven't found it to have any bad habits.

Pat