I built a Goldberg cub and it is a stable flyer. It will most assurdly teach you to use the Rudder ! Proper ground handling is also another thing it will teach you. Like giving some up elevator while taxing and taking off and landing that is required for taildraggers. I built the regular wing 76.5 and it is a floater but make sure like any airplane you have the cg just right. I personally feel the Uproar is a good second plane. The .40 & .60 size are still on sale at tower. They can be mild or wild depending on your throws and are cheap and dependable. Here a couple pictures of my Cub and Uproar.