The RTF is quick and easy but it's more rewarding to build the models. After visiting the blog of Mitja, I decided to build a Guppy. It's a 1.5 m wingspan glider constructed with balsa with a traditional method. Both glider or electric glider versions are available. In addition, you can choose to build a wing with a strong dihedral angle and a flat profile to get started. If you wish to perform aerobatics, the author proposes wing with a nearly symmetrical profile and ailerons. You will find plans and a great deal of information on the blog of Mitja. The glider has been built by many modeler in the world. Opinions are very positive.