The next step up in acrobatic and 3D flying. A re-designed wing allowing for much faster rolls while maintaining and improving on precision. Larger ailerons help, along with elevators with a whole new shape and size (yes, bigger too!). We cut back on the rudder, which actually made it more powerful gaining in rudder authority. Add this to a ligher all round design and you have an amazing kit. You have a Pilot-RC Extra 330Lx.