Amazing....I didn't know that a 4* was that aerobatically inclined, hehe, Sig just doesn't seem like the type of manufacturer that would have a plane like that, I learned on a sig, and my second plane was a mid-star 40, I built each of these and am definitely pleased with sig. I have the high rates on my mid-star at about mechanical limit and the little plane runs the paces without a gripe...