It flays well and precis ,i have many flights with mine ... problems with the weight is fore me in the landing and some maneuvers ,but it is not a weary big problem fore a novice patter flayer like myself . But if a good competition pilot where to fly it ,he might think it is garbage . The thing that surprises me is why protec sets the all up wight to 3,7kg when it is impossible to come so lo on the scale,and they also brag about how they have manage to built a wooden plane that will out preforme modern composite models in weight stiffness and precision. just see fore your selfs http://www.protech.be/html/t0407tojeiro.html