Ive been flying my harrier for the past two weeks and have been very happy with how the plane flys...I have my cg set at 150mm but I also did as a few others did and set my expo on my elevator at 80 percent, and 40 percent on my ailerons. I replaced the stock landing gear strait out of the box with a set of composite landing gear and 3" Dubro foam tires since all i fly on is grass. I also replaced the rear tail gear with a better style that uses the springs to pull the wheel to save the rudder servo. So far I have been very pleased with it im just messing around trying to find props that I like for it. Oh I also covered the entire bottom of the airplane in red and yellow checered ultra coat to improve visability.....and I know someone will chime in with if you cant tell top from bottom your flying to high............but i dont care i covered the bottom just so there would be no question. My plane also knife edges pretty well also....Not as good as some planes but It does them pretty nice...I definately had to figure out a little bit of stick work to make them do better but I was pretty please with the KE. Like everyone else says it does everything else so well I couldnt complain.