I just flew one of these (kit built) this past weekend and it flew pretty well. I couldn't get it to do a blender, right side up or inverted. The plane does knifedge well though. I am going to put the ARF together as a future project with a 3W24 or RCS 140 gasser. This thing will fit in the back of my Ford Explorer assembled. How cool is that, to have a gas powered bipe that doesn't have to be assembled at the field.