I have built the Sbach 300 and just received the 342 today in the mail. Good quality and the best bang for the buck in the 50cc class sport plane. I do not fly 3D but rather sport fly on the aggressive side. Honestly the first plane I have ever built that needed no dead weight in the nose or tail to balance. First flight of the 300 was flawless as the plane needed near zero trim and the AGM 55cc gave it the perfect balance of power and weight. The plane tracks like its on rails, it does what you tell it to do and no more, very precise. The only thing I did to the airframe was add CA glue to all exposed joints and coat the motor box with epoxy.