I have this plane in the arf version with an os 61fx on it. Its a great flier. Wonderful for point rolls, knife edge, etc. but its not a 3d machine. Mine will hover and pull out slowly, but it will not harrier. For that matter, a B17 will hover if you get the power right. For 3d you need something more lightly loaded with big control surfaces. Still, for learning aerobatics this plane (the extra, not the B17 8^) is worth a look. Get a Flip, UCD or Goldberg Extreme 330 to tackle the wild side.....

Dave