I just finished and test flew mine with the v-tail. After reading about v tails being less responsive i set the controll horns for neck break. The first take off it pulled up and over and came right back at me. It is very responsive and the only time i felt it was darty was when one of the two v-tail servos started to loosen up and let the one tail surface flop. I set both the alerons and elevator with a straight edge and it seems to be great. My battery pack has to be about 3 in from the back to balance it with the K&B 65 on it but it really goes. Talk about loud, it has a j'tec box muffler on it that screams. Was a lot of fun at the last club outing.