I just got this thing put together on saturday, it flies great and is very sturdy but it is a little bit underpowered with a Himax 400. flies almost any 3D menuver I can throw at it(except prolonged hovering) only complaints is that the pre-cut servo holes are too small for HS-55s or other micro size servos of that size. The carbon fiber control rods included are weak and flex/break in flight. I replaced them with normal control wire after the first flight, almost crashed controls were so sloppy.[]